1
|
Grivet R, Monier A, Huerre A, Josserand C, Séon T. Contact Line Catch Up by Growing Ice Crystals. Phys Rev Lett 2022; 128:254501. [PMID: 35802433 DOI: 10.1103/physrevlett.128.254501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Accepted: 05/09/2022] [Indexed: 06/15/2023]
Abstract
The effect of freezing on contact line motion is a scientific challenge in the understanding of the solidification of capillary flows. In this Letter, we experimentally investigate the spreading and freezing of a water droplet on a cold substrate. We demonstrate that solidification stops the spreading because the ice crystals catch up with the advancing contact line. Indeed, we observe the formation and growth of ice crystals along the substrate during the drop spreading, and show that their velocity equals the contact line velocity when the drop stops. Modeling the growth of the crystals, we predict the shape of the crystal front and show that the substrate thermal properties play a major role on the frozen drop radius.
Collapse
Affiliation(s)
- Rodolphe Grivet
- Laboratoire d'Hydrodynamique (LadHyX), UMR 7646 CNRS-Ecole Polytechnique, IP Paris, 91128 Palaiseau, France
| | - Antoine Monier
- Institut Jean Le Rond ∂'Alembert, UMR 7190, CNRS-Sorbonne Université, F-75005 Paris, France
| | - Axel Huerre
- MSC, UMR 7057, CNRS-Université Paris Cité, 75013 Paris, France
| | - Christophe Josserand
- Laboratoire d'Hydrodynamique (LadHyX), UMR 7646 CNRS-Ecole Polytechnique, IP Paris, 91128 Palaiseau, France
| | - Thomas Séon
- Institut Jean Le Rond ∂'Alembert, UMR 7190, CNRS-Sorbonne Université, F-75005 Paris, France
| |
Collapse
|
2
|
Crawford C, Vanoli E, Decorde B, Lancelot M, Duprat C, Josserand C, Jilesen J, Bouadma L, Timsit JF. Modeling of aerosol transmission of airborne pathogens in ICU rooms of COVID-19 patients with acute respiratory failure. Sci Rep 2021; 11:11778. [PMID: 34083700 PMCID: PMC8175584 DOI: 10.1038/s41598-021-91265-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 05/11/2021] [Indexed: 01/06/2023] Open
Abstract
The COVID-19 pandemic has generated many concerns about cross-contamination risks, particularly in hospital settings and Intensive Care Units (ICU). Virus-laden aerosols produced by infected patients can propagate throughout ventilated rooms and put medical personnel entering them at risk. Experimental results found with a schlieren optical method have shown that the air flows generated by a cough and normal breathing were modified by the oxygenation technique used, especially when using High Flow Nasal Canulae, increasing the shedding of potentially infectious airborne particles. This study also uses a 3D Computational Fluid Dynamics model based on a Lattice Boltzmann Method to simulate the air flows as well as the movement of numerous airborne particles produced by a patient's cough within an ICU room under negative pressure. The effects of different mitigation scenarii on the amount of aerosols potentially containing SARS-CoV-2 that are extracted through the ventilation system are investigated. Numerical results indicate that adequate bed orientation and additional air treatment unit positioning can increase by 40% the number of particles extracted and decrease by 25% the amount of particles deposited on surfaces 45s after shedding. This approach could help lay the grounds for a more comprehensive way to tackle contamination risks in hospitals, as the model can be seen as a proof of concept and be adapted to any room configuration.
Collapse
Affiliation(s)
- Cyril Crawford
- Ecole Polytechnique, IP Paris, 91128, Palaiseau, France.
- Department of Civil and Environmental Engineering, Imperial College London, SW7 2AZ, London, UK.
| | | | - Baptiste Decorde
- Laboratoire d'Hydrodynamique (LadHyX), UMR 7646 CNRS-Ecole Polytechnique, IP Paris, 91128, Palaiseau, France
| | | | - Camille Duprat
- Laboratoire d'Hydrodynamique (LadHyX), UMR 7646 CNRS-Ecole Polytechnique, IP Paris, 91128, Palaiseau, France
| | - Christophe Josserand
- Laboratoire d'Hydrodynamique (LadHyX), UMR 7646 CNRS-Ecole Polytechnique, IP Paris, 91128, Palaiseau, France
| | | | - Lila Bouadma
- AP-HP, Bichat Claude Bernard Hospital, Medical and Infectious Diseases ICU (MI2), 75018, Paris, France
- Université de Paris, IAME, INSERM, 75018, Paris, France
| | - Jean-François Timsit
- AP-HP, Bichat Claude Bernard Hospital, Medical and Infectious Diseases ICU (MI2), 75018, Paris, France
- Université de Paris, IAME, INSERM, 75018, Paris, France
| |
Collapse
|
3
|
Josserand C, Le Berre M, Pomeau Y. Scaling laws in turbulence. Chaos 2020; 30:073137. [PMID: 32752609 DOI: 10.1063/1.5144147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Accepted: 07/08/2020] [Indexed: 06/11/2023]
Abstract
Following the idea that dissipation in turbulence at high Reynolds number is dominated by singular events in space-time and described by solutions of the inviscid Euler equations, we draw the conclusion that in such flows, scaling laws should depend only on quantities appearing in the Euler equations. This excludes viscosity or a turbulent length as scaling parameters and constrains drastically possible analytical pictures of this limit. We focus on the drag law deduced by Newton for a projectile moving quickly in a fluid at rest. Inspired by this Newton's drag force law (proportional to the square of the speed of the moving object in the limit of large Reynolds numbers), which is well verified in experiments when the location of the detachment of the boundary layer is defined, we propose an explicit relationship between the Reynolds stress in the turbulent wake and quantities depending on the velocity field (averaged in time but depending on space). This model takes the form of an integrodifferential equation for the velocity which is eventually solved for a Poiseuille flow in a circular pipe.
Collapse
Affiliation(s)
| | - Martine Le Berre
- Ladhyx (CNRS UMR 7646), Ecole Polytechnique, 91128 Palaiseau, France
| | - Yves Pomeau
- Ladhyx (CNRS UMR 7646), Ecole Polytechnique, 91128 Palaiseau, France
| |
Collapse
|
4
|
Huang KL, Pan KL, Josserand C. Pinching Dynamics and Satellite Droplet Formation in Symmetrical Droplet Collisions. Phys Rev Lett 2019; 123:234502. [PMID: 31868505 DOI: 10.1103/physrevlett.123.234502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Indexed: 06/10/2023]
Abstract
In head-on collisions between two droplets, reflexive separation is frequently formed, showing tentative coalescence followed by disintegration into two primary drops. With higher impact inertia relative to surface tension, characterized by a Weber number (We), more satellite droplets are created between the primary drops. In the symmetric configuration, the existing phenomenological models indicate the absence of satellite droplets at the onset We when the coalesced drops start to break. Supported by experimental and simulation evidence, here we demonstrate the exclusive formation of at least one droplet after pinch of the thread connecting the colliding drops. In accordance with the universal features of a thinning liquid filament approaching singularity as predicted by scaling theories of pinch-off, the mechanism of satellite droplet formation in the symmetrical impact of droplets is clarified. Via slight breaking of the symmetry, no satellite droplet can be observed, thus providing a possible interpretation for the discrepancy in the literature and implications for controlling undesirable drop formation.
Collapse
Affiliation(s)
- Kuan-Ling Huang
- Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan, Republic of China
| | - Kuo-Long Pan
- Department of Mechanical Engineering, National Taiwan University, Taipei 10617, Taiwan, Republic of China
| | - Christophe Josserand
- LadHyX, CNRS and Ecole Polytechnique, UMR 7646, IP Paris, 91128 Palaiseau, France
| |
Collapse
|
5
|
Lagarde A, Josserand C, Protière S. The capillary interaction between pairs of granular rafts. Soft Matter 2019; 15:5695-5702. [PMID: 31257397 DOI: 10.1039/c9sm00476a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
When an object is placed at the surface of a liquid, its weight deforms the interface. For two identical spherical objects, such a deformation creates an attractive force, leading to the aggregation of the two-body system. Here, we experimentally investigate the interaction between two granular rafts, formed by the aggregation of dense millimeter-sized beads placed at an oil-water interface. The interfacial deformation created by such a two-dimensional object exceeds by at least an order of magnitude the deformation of a single bead. This leads to unusually high capillary forces which strongly depend on the number of particles. Likewise, because the raft grows in size as more particles are added, the viscous drag experienced increases along with the capillary attraction, leading to a non-trivial dependence of the balance of forces on the number of beads. By studying the relative motion of two granular rafts in relation with the interfacial deformation they generate, we derive a model for the observed speed profiles. With this work, we generalize how the capillary interaction between two non-identical complex structures evolves with their respective geometry.
Collapse
Affiliation(s)
- Antoine Lagarde
- Sorbonne Université, Centre National de la Recherche Scientifique, UMR 7190, Institut Jean Le Rond ∂'Alembert, F-75005 Paris, France.
| | | | - Suzie Protière
- Sorbonne Université, Centre National de la Recherche Scientifique, UMR 7190, Institut Jean Le Rond ∂'Alembert, F-75005 Paris, France.
| |
Collapse
|
6
|
Marcotte F, Michon GJ, Séon T, Josserand C. Ejecta, Corolla, and Splashes from Drop Impacts on Viscous Fluids. Phys Rev Lett 2019; 122:014501. [PMID: 31012665 DOI: 10.1103/physrevlett.122.014501] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 10/11/2018] [Indexed: 06/09/2023]
Abstract
We investigate the impact of liquid drops on deep pools of aqueous glycerol solutions with variable pool viscosity and air pressure both experimentally and numerically. With this approach, we are able to address drop impacts on substrates that continuously transition from low-viscosity liquids to almost solids. We show that the generic corolla spreading out from the impact point consists of two distinct sheets, namely an ejecta sheet fed by the drop liquid and a second sheet fed by the substrate liquid, which evolve on separated timescales. These two sheets contribute to a varying extent to the corolla overall dynamics and splashing, depending on the viscosity ratio between the two liquids.
Collapse
Affiliation(s)
- Florence Marcotte
- Sorbonne Université, CNRS, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Guy-Jean Michon
- Sorbonne Université, CNRS, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Thomas Séon
- Sorbonne Université, CNRS, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Christophe Josserand
- Laboratoire d'Hydrodynamique (LadHyX), UMR7646 CNRS-Ecole Polytechnique, 91128 Palaiseau CEDEX, France
| |
Collapse
|
7
|
Jambon-Puillet E, Josserand C, Protière S. Drops Floating on Granular Rafts: A Tool for Liquid Transport and Delivery. Langmuir 2018; 34:4437-4444. [PMID: 29551066 PMCID: PMC5906752 DOI: 10.1021/acs.langmuir.7b04101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 02/02/2018] [Indexed: 06/08/2023]
Abstract
Solid particles can modify the properties of liquid interfaces and are therefore widely used to coat drops, bubbles, and stabilize emulsions and foams. Here, we propose a new, easy, and affordable method to produce millimetric to centimetric water-in-water capsules using solid particles. We prevent the coalescence of a water drop at an oil-water interface using a monolayer of large, dense, and hydrophobic particles: a "granular raft". The capsule is then formed by a mechanical instability occurring when the interface collapses under the combined load of the floating drop and particle weight. During the destabilization, the water drop sinks into the water subphase through an oil-particle film which covers it to produce the armored capsule. By modeling the raft as a heavy membrane, we predict the floating drop shape, the raft deformation, its destabilization and highlight the complex dual nature (solid- and liquid-like) of the capsule shell. Because armored capsules' content is isolated, transportable, and easily releasable, they are great candidates for applications requiring transport of water-soluble compounds in aqueous systems such as green chemistry or cell biology.
Collapse
Affiliation(s)
- Etienne Jambon-Puillet
- Sorbonne
Université, UPMC Univ Paris 06, CNRS, UMR 7190, Institut Jean
Le Rond d’Alembert, F-75005 Paris, France
| | - Christophe Josserand
- Sorbonne
Université, UPMC Univ Paris 06, CNRS, UMR 7190, Institut Jean
Le Rond d’Alembert, F-75005 Paris, France
- Laboratoire
d’Hydrodynamique (LadHyX), UMR7646 CNRS-Ecole Polytechnique, 91128 Palaiseau
CEDEX, France
| | - Suzie Protière
- Sorbonne
Université, UPMC Univ Paris 06, CNRS, UMR 7190, Institut Jean
Le Rond d’Alembert, F-75005 Paris, France
| |
Collapse
|
8
|
Abstract
The Sagdeev-Zaslavski (SZ) equation for wave turbulence is analytically derived, both in terms of a generating function and of a multipoint probability density function (PDF), for weakly interacting waves with initial random phases. When the initial amplitudes are also random, a one-point PDF equation is derived. Such analytical calculations remarkably agree with results obtained in totally different fashions. Numerical investigations of the two-dimensional nonlinear Schrödinger equation (NLSE) and of a vibrating plate prove the following: (i) Generic Hamiltonian four-wave systems rapidly attain a random distribution of phases independently of the slower dynamics of the amplitudes, vindicating the hypothesis of initially random phases. (ii) Relaxation of the Fourier amplitudes to the predicted stationary distribution (exponential) happens on a faster time scale than relaxation of the spectrum (Rayleigh-Jeans distribution). (iii) The PDF equation correctly describes dynamics under different forcings: The NLSE has an exponential PDF corresponding to a quasi-Gaussian solution, as the vibrating plates, that also shows some intermittency at very strong forcings.
Collapse
Affiliation(s)
- Sergio Chibbaro
- Sorbonne Université, UPMC Université Paris 06, CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Giovanni Dematteis
- Dipartimento di Scienze Matematiche, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
| | - Christophe Josserand
- Sorbonne Université, UPMC Université Paris 06, CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
- Laboratoire d'Hydrodynamique (LadHyX), UMR 7646 CNRS-Ecole Polytechnique, F-91128 Palaiseau Cedex, France
| | - Lamberto Rondoni
- Dipartimento di Scienze Matematiche, Politecnico di Torino, Corso Duca degli Abruzzi 24, I-10129 Torino, Italy
- INFN, Sezione di Torino, Via P. Giuria 1, I-10125 Torino, Italy
- MICEMS, Universiti Putra Malaysia, 43400 Serdang Selangor, Malaysia
| |
Collapse
|
9
|
Abstract
Instruments that belong to the gong family exhibit nonlinear dynamics at large amplitudes of vibration. In the specific case of the xiaoluo gong, this nonlinear behavior results in a pitch glide of several modes of the instrument in addition to harmonic distortion and internal resonances. This study applies a linear modal active control to a xiaoluo gong in an attempt to change its sound properties. First, a modal damping control of the fundamental mode based on a linear identification and a state space controller is applied in the small amplitude regime (no pitch glide). Results indicate that modal control influences not only the controlled mode but also the frequency components involved in distortion or internal resonance phenomena. Second, a modal damping control is performed in the large amplitude regime (in the presence of pitch glide). Results show that modal control does not affect the pitch glide. However, the controller becomes effective at a time trigger which is related to the instantaneous frequency.
Collapse
Affiliation(s)
- Marguerite Jossic
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190 Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Adrien Mamou-Mani
- Sorbonne Universités, UPMC Univ Paris 06, IRCAM, CNRS, UMR 9912 Science and Technology of Music and Sound lab, F-75004, Paris, France
| | - Baptiste Chomette
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190 Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - David Roze
- Sorbonne Universités, UPMC Univ Paris 06, IRCAM, CNRS, UMR 9912 Science and Technology of Music and Sound lab F-75004, Paris, France
| | - François Ollivier
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190 Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Christophe Josserand
- Sorbonne Universités, UPMC Univ Paris 06, CNRS, UMR 7190 Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| |
Collapse
|
10
|
Abstract
We report experiments that yield new insights on the behavior of granular rafts at an oil-water interface. We show that these particle aggregates can float or sink depending on dimensionless parameters taking into account the particle densities and size and the densities of the two fluids. We characterize the raft shape and stability and propose a model to predict its shape and maximum length to remain afloat. Finally we find that wrinkles and folds appear along the raft due to compression by its own weight, which can trigger destabilization. These features are characteristics of an elastic instability, which we discuss, including the limitations of our model.
Collapse
Affiliation(s)
- Suzie Protière
- CNRS UMR 7190, Sorbonne Universités, UPMC Univ Paris 06, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Christophe Josserand
- CNRS UMR 7190, Sorbonne Universités, UPMC Univ Paris 06, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Jeffrey M Aristoff
- Numerica Corporation, 5042 Technology Parkway, Suite 100, Fort Collins, Colorado 80528, USA
| | - Howard A Stone
- Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544, USA
| | - Manouk Abkarian
- CNRS UMR 5048, University Montpellier, Centre de Biochimie Structurale, 34090 Montpellier, France
| |
Collapse
|
11
|
Ghabache E, Josserand C, Séon T. Frozen Impacted Drop: From Fragmentation to Hierarchical Crack Patterns. Phys Rev Lett 2016; 117:074501. [PMID: 27563968 DOI: 10.1103/physrevlett.117.074501] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Indexed: 06/06/2023]
Abstract
We investigate experimentally the quenching of a liquid pancake, obtained through the impact of a water drop on a cold solid substrate (0 °C to -60 °C). We show that, below a certain substrate temperature, fractures appear on the frozen pancake and the crack patterns change from a 2D fragmentation regime to a hierarchical fracture regime as the thermal shock increases. The different regimes are discussed and the transition temperatures are estimated through classical fracture scaling arguments. Finally, a phase diagram presents how these regimes can be controlled by the drop impact parameters.
Collapse
Affiliation(s)
- Elisabeth Ghabache
- Sorbonne Universités, UPMC Université Paris 06, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005 Paris, France and CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Christophe Josserand
- Sorbonne Universités, UPMC Université Paris 06, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005 Paris, France and CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| | - Thomas Séon
- Sorbonne Universités, UPMC Université Paris 06, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005 Paris, France and CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005 Paris, France
| |
Collapse
|
12
|
Abstract
We investigate the onset of intermittency for vibrating elastic plate turbulence in the framework of the weak wave turbulence theory using a numerical approach. The spectrum of the displacement field and the structure functions of the fluctuations are computed for different forcing amplitudes. At low forcing, the spectrum predicted by the theory is observed, while the fluctuations are consistent with Gaussian statistics. When the forcing is increased, the spectrum varies at large scales, corresponding to the oscillations of nonlinear structures made of ridges delimited by d cones. In this regime, the fluctuations exhibit small-scale intermittency that can be fitted via a multifractal model. The analysis of the nonlinear frequency shows that the intermittency is linked to the breakdown of the weak turbulence at large scales only.
Collapse
Affiliation(s)
- Sergio Chibbaro
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005, Paris, France and CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005, Paris, France
| | - Christophe Josserand
- Sorbonne Universités, UPMC Univ Paris 06, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005, Paris, France and CNRS, UMR 7190, Institut Jean Le Rond d'Alembert, F-75005, Paris, France
| |
Collapse
|
13
|
Abstract
The dynamics of random weakly nonlinear waves is studied in the framework of vibrating thin elastic plates. Although it has been previously predicted that no stationary inverse cascade of constant wave action flux could exist in the framework of wave turbulence for elastic plates, we present substantial evidence of the existence of a time-dependent inverse cascade, opening up the possibility of self-organization for a larger class of systems. This inverse cascade transports the spectral density of the amplitude of the waves from short up to large scales, increasing the distribution of long waves despite the short-wave fluctuations. This dynamics appears to be self-similar and possesses a power-law behavior in the short-wavelength limit which significantly differs from the exponent obtained via a Kolmogorov dimensional analysis argument. Finally, we show explicitly a tendency to build a long-wave coherent structure in finite time.
Collapse
Affiliation(s)
- Gustavo Düring
- Facultad de Física, Pontificia Universidad Católica de Chile, Casilla 306, Santiago, Chile
| | - Christophe Josserand
- Sorbonne Universités, CNRS & UPMC Univ Paris 06, UMR 7190, Institut d'Alembert, F-75005, Paris, France
| | - Sergio Rica
- Facultad de Ingeniería y Ciencias, Universidad Adolfo Ibáñez, Avda. Diagonal las Torres 2640, Peñalolén, Santiago, Chile
| |
Collapse
|
14
|
Miquel B, Alexakis A, Josserand C, Mordant N. Transition from wave turbulence to dynamical crumpling in vibrated elastic plates. Phys Rev Lett 2013; 111:054302. [PMID: 23952407 DOI: 10.1103/physrevlett.111.054302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/31/2013] [Indexed: 06/02/2023]
Abstract
We study the dynamical regime of wave turbulence of a vibrated thin elastic plate based on experimental and numerical observations. We focus our study on the strongly nonlinear regime described in a previous Letter by Yokoyama and Takaoka. At small forcing, a weakly nonlinear regime is compatible with the weak turbulence theory when the dissipation is localized at high wave number. When the forcing intensity is increased, a strongly nonlinear regime emerges: singular structures dominate the dynamics at large scales whereas at small scales the weak turbulence is still present. A turbulence of singular structures with folds and D cones develops that alters significantly the energy spectra and causes the emergence of intermittency.
Collapse
Affiliation(s)
- Benjamin Miquel
- Laboratoire de Physique Statistique, Ecole Normale Supérieure, Université Pierre et Marie Curie, CNRS, 24 rue Lhomond, 75005 Paris, France
| | | | | | | |
Collapse
|
15
|
Fichot J, Heyd R, Josserand C, Chourpa I, Gombart E, Tranchant JF, Saboungi ML. Patterned surfaces in the drying of films composed of water, polymer, and alcohol. Phys Rev E Stat Nonlin Soft Matter Phys 2012; 86:061601. [PMID: 23367958 DOI: 10.1103/physreve.86.061601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2011] [Revised: 10/23/2012] [Indexed: 06/01/2023]
Abstract
A study of the complex drying dynamics of polymeric mixtures with optical microscopy and gravimetric measurement is presented. Droplet formation is observed, followed by a collapse that leads to the residual craters in the dried film. The process is followed in situ under well-defined temperature and hygrometric conditions to determine the origin and nature of these droplets and craters. The drying process is usually completed within 1 h. The observations are explained using a simple diffusion model based on experimental results collected from mass and optical measurements as well as Raman confocal microspectrometry. Although the specific polymeric mixtures used here are of interest to the cosmetic industry, the general conclusions reached can apply to other polymeric aqueous solutions with applications to commercial and artistic painting.
Collapse
Affiliation(s)
- Julie Fichot
- Centre de Recherche sur la Matière Divisée, CNRS, Université d'Orléans, France and LVMH Recherche, 185 avenue de Verdun 45800 Saint Jean de Braye, France
| | | | | | | | | | | | | |
Collapse
|
16
|
Mason P, Josserand C, Rica S. Activated nucleation of vortices in a dipole-blockaded supersolid condensate. Phys Rev Lett 2012; 109:045301. [PMID: 23006094 DOI: 10.1103/physrevlett.109.045301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Indexed: 06/01/2023]
Abstract
We investigate theoretically and numerically a model of a supersolid in a dipole-blockaded Bose-Einstein condensate. The dependence of the superfluid fraction with an imposed thermal bath and a uniform boost velocity on the condensate is considered. Specifically, we observe a critical velocity for the nucleation of vortices in our system that is strongly linked to a steplike decrease in the superfluid fraction. We are able to use a scaling argument based on the energy required to activate a vortex, relating the critical temperature to the critical velocity, and find that this relationship is in good agreement with the numerical simulations carried out on the nonlocal Gross-Pitaevskii equation.
Collapse
Affiliation(s)
- Peter Mason
- Department of Physics, Durham University, Durham DH1 3LE, United Kingdom
| | | | | |
Collapse
|
17
|
Thoraval MJ, Takehara K, Etoh TG, Popinet S, Ray P, Josserand C, Zaleski S, Thoroddsen ST. von Kármán vortex street within an impacting drop. Phys Rev Lett 2012; 108:264506. [PMID: 23004991 DOI: 10.1103/physrevlett.108.264506] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Indexed: 06/01/2023]
Abstract
The splashing of a drop impacting onto a liquid pool produces a range of different sized microdroplets. At high impact velocities, the most significant source of these droplets is a thin liquid jet emerging at the start of the impact from the neck that connects the drop to the pool. We use ultrahigh-speed video imaging in combination with high-resolution numerical simulations to show how this ejecta gives way to irregular splashing. At higher Reynolds numbers, its base becomes unstable, shedding vortex rings into the liquid from the free surface in an axisymmetric von Kármán vortex street, thus breaking the ejecta sheet as it forms.
Collapse
Affiliation(s)
- Marie-Jean Thoraval
- Division of Physical Sciences and Engineering & Clean Combustion Research Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
| | | | | | | | | | | | | | | |
Collapse
|
18
|
Lagubeau G, Fontelos MA, Josserand C, Maurel A, Pagneux V, Petitjeans P. Flower patterns in drop impact on thin liquid films. Phys Rev Lett 2010; 105:184503. [PMID: 21231109 DOI: 10.1103/physrevlett.105.184503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2010] [Indexed: 05/30/2023]
Abstract
We describe experimentally the formation of a pattern for drop impacts on thin liquid films for a large range of impact parameters. Using the shallow-water approximation, we are able to explain the main mechanisms leading to these patterns: it consists in the linear instability of the self-similar axisymmetric radial solution of the equations. Agreement between the experiments and the theory is remarkably good, leading, in particular, to the prediction that the most unstable fold number scales like (We/h∞)2/7.
Collapse
Affiliation(s)
- Guillaume Lagubeau
- LAUM, UMR CNRS 6613, Avenue Olivier Messiaen, 72085 Le Mans Cedex 9, France
| | | | | | | | | | | |
Collapse
|
19
|
Affiliation(s)
- O. Devauchelle
- Laboratoire de Dynamique des Fluides Géologiques; Institut de Physique du Globe de Paris; Paris France
| | - L. Malverti
- Laboratoire de Dynamique des Fluides Géologiques; Institut de Physique du Globe de Paris; Paris France
| | - É. Lajeunesse
- Laboratoire de Dynamique des Fluides Géologiques; Institut de Physique du Globe de Paris; Paris France
| | - C. Josserand
- Institut Jean Le Rond d'Alembert; Université Pierre et Marie Curie, CNRS; Paris France
| | - P.-Y. Lagrée
- Institut Jean Le Rond d'Alembert; Université Pierre et Marie Curie, CNRS; Paris France
| | - F. Métivier
- Laboratoire de Dynamique des Fluides Géologiques; Institut de Physique du Globe de Paris; Paris France
| |
Collapse
|
20
|
Abstract
We simulate the impact of a viscous liquid drop onto a smooth dry solid surface. As in experiments, when ambient air effects are negligible, impact flattens the falling drop without producing a splash. The no-slip boundary condition at the wall produces a boundary layer inside the liquid. Later, the flattening surface of the drop traces out the boundary layer. As a result, the eventual shape of the drop is a "pancake" of uniform thickness except at the rim, where surface tension effects are significant. The thickness of the pancake is simply the height where the drop surface first collides with the boundary layer.
Collapse
Affiliation(s)
- Robert D Schroll
- Physics Department and the James Franck Institute, The University of Chicago, 929 East 57th Street, Chicago, Illinois 60637, USA
| | | | | | | |
Collapse
|
21
|
Brault P, Josserand C, Bauchire JM, Caillard A, Charles C, Boswell RW. Anomalous diffusion mediated by atom deposition into a porous substrate. Phys Rev Lett 2009; 102:045901. [PMID: 19257443 DOI: 10.1103/physrevlett.102.045901] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2008] [Indexed: 05/27/2023]
Abstract
Constant flux atom deposition into a porous medium is shown to generate a dense overlayer and a diffusion profile. Scaling analysis shows that the overlayer acts as a dynamic control for atomic diffusion in the porous substrate. This is modeled by generalizing the porous diffusion equation with a time-dependent diffusion coefficient equivalent to a nonlinear rescaling of time.
Collapse
Affiliation(s)
- Pascal Brault
- Groupe de Recherches sur l'Energétique des Milieux Ionisés, UMR6606, Université d'Orléans, France
| | | | | | | | | | | |
Collapse
|
22
|
Devauchelle O, Josserand C, Lagrée PY, Zaleski S. Morphodynamic modeling of erodible laminar channels. Phys Rev E Stat Nonlin Soft Matter Phys 2007; 76:056318. [PMID: 18233767 DOI: 10.1103/physreve.76.056318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2007] [Indexed: 05/25/2023]
Abstract
A two-dimensional model for the erosion generated by viscous free-surface flows, based on the shallow-water equations and the lubrication approximation, is presented. It has a family of self-similar solutions for straight erodible channels, with an aspect ratio that increases in time. It is also shown, through a simplified stability analysis, that a laminar river can generate various bar instabilities very similar to those observed in natural rivers. This theoretical similarity reflects the meandering and braiding tendencies of laminar rivers indicated by F. Métivier and P. Meunier [J. Hydrol. 27, 22 (2003)]. Finally, we propose a simple scenario for the transition between patterns observed in experimental erodible channels.
Collapse
Affiliation(s)
- Olivier Devauchelle
- Institut Jean le Rond d'Alembert, Université Pierre et Marie Curie-Paris 6, CNRS-UMR 7190, Case 162, 4 place Jussieu, 75252 Paris Cédex 05, France
| | | | | | | |
Collapse
|
23
|
Josserand C, Pomeau Y, Rica S. Coexistence of ordinary elasticity and superfluidity in a model of a defect-free supersolid. Phys Rev Lett 2007; 98:195301. [PMID: 17677624 DOI: 10.1103/physrevlett.98.195301] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2006] [Indexed: 05/16/2023]
Abstract
The mechanical behavior of a supersolid is studied in the framework of a fully explicit model derived from the Gross-Pitaevskii equation without assuming any defect or vacancy. A set of coupled nonlinear partial differential equations plus boundary conditions is derived. The conditions of mechanical equilibrium are studied under external constraints such as steady rotation and external stress. Our model explains the experimentally observed paradoxical behavior: a nonclassical rotational inertia fraction in the limit of small rotation speed but a solidlike elastic response to small stress or an external force field.
Collapse
Affiliation(s)
- Christophe Josserand
- Institut Jean Le Rond D'Alembert, CNRS UMR 7190, Case 162, 4 place Jussieu, 75005 Paris, France
| | | | | |
Collapse
|
24
|
Düring G, Josserand C, Rica S. Weak turbulence for a vibrating plate: can one hear a Kolmogorov spectrum? Phys Rev Lett 2006; 97:025503. [PMID: 16907456 DOI: 10.1103/physrevlett.97.025503] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2005] [Indexed: 05/11/2023]
Abstract
We study the long-time evolution of waves of a thin elastic plate in the limit of small deformation so that modes of oscillations interact weakly. According to the theory of weak turbulence (successfully applied in the past to plasma, optics, and hydrodynamic waves), this nonlinear wave system evolves at long times with a slow transfer of energy from one mode to another. We derive a kinetic equation for the spectral transfer in terms of the second order moment. We show that such a theory describes the approach to an equilibrium wave spectrum and represents also an energy cascade, often called the Kolmogorov-Zakharov spectrum. We perform numerical simulations that confirm this scenario.
Collapse
Affiliation(s)
- Gustavo Düring
- Departamento de Física, Universidad de Chile, Blanco Encalada 2008, Santiago, Chile
| | | | | |
Collapse
|
25
|
Abstract
We show that when water droplets gently impact on a hydrophobic surface, the droplet shoots out a violent jet, the velocity of which can be up to 40 times the drop impact speed. As a function of the impact velocity, two different hydrodynamic singularities are found that correspond to the collapse of the air cavity formed by the deformation of the drop at impact. It is the collapse that subsequently leads to the jet formation. We show that the divergence of the jet velocity can be understood using simple scaling arguments. In addition, we find that very large air bubbles can remain trapped in the drops. The surprising occurrence of the bubbles for low-speed impact is connected with the nature of the singularities, and can have important consequences for drop deposition, e.g., in ink-jet printing.
Collapse
Affiliation(s)
- Denis Bartolo
- Laboratoire de Physique Statistique de l'ENS, 24 Rue Lhomond, 75231 Paris Cédex 05, France.
| | | | | |
Collapse
|
26
|
Abstract
We study the formation of a large-scale coherent structure (a condensate) in classical wave equations by considering the defocusing nonlinear Schrödinger equation as a representative model. We formulate a thermodynamic description of the classical condensation process by using a wave turbulence theory with ultraviolet cutoff. In three dimensions the equilibrium state undergoes a phase transition for sufficiently low energy density, while no transition occurs in two dimensions, in complete analogy with standard Bose-Einstein condensation in quantum systems. On the basis of a modified wave turbulence theory, we show that the nonlinear interaction makes the transition to condensation subcritical. The theory is in quantitative agreement with the numerical integration of the nonlinear Schrödinger equation.
Collapse
|
27
|
Abstract
We investigate long time numerical simulations of the inviscid Rayleigh-Taylor instability at Atwood number one using a boundary integral method. We are able to attain the asymptotic behavior for the spikes predicted by Clavin and Williams for which we give a simplified demonstration. In particular, we observe that the spike's curvature evolves as t(3), while the overshoot in acceleration shows good agreement with the suggested 1/t(5) law. Moreover, we obtain consistent results for the prefactor coefficients of the asymptotic laws. Eventually we exhibit the self-similar behavior of the interface profile near the spike.
Collapse
Affiliation(s)
- Laurent Duchemin
- Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, United Kingdom
| | | | | |
Collapse
|
28
|
Josserand C. Stability of giant vortices in quantum liquids. Chaos 2004; 14:875-881. [PMID: 15446998 DOI: 10.1063/1.1785892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We show how giant vortices can be stabilized for strong external potentials in Bose-Einstein condensates. We illustrate the formation of these vortices thanks to the Ginzburg-Landau dissipative dynamics for two typical potentials in two spatial dimensions. The giant vortex stability is studied for the particular case of a rotating cylindrical hard wall. Due to axial symmetry the minimization of the perturbed energy is simplified into a one dimensional relaxation dynamics. Solving this 1D minimization problem, we observe that giant vortices are either never stable, or only stable in a finite frequency range. Finally we obtain the marginal curve for the minimum frequency needed to observe a giant vortex.
Collapse
Affiliation(s)
- Christophe Josserand
- Laboratoire de Modélisation en Mécanique, UPMC-CNRS UMR 7607, Case 162, 4 Place Jussieu, 75005 Paris, France
| |
Collapse
|
29
|
Josserand C, Lagrée PY, Lhuillier D. Stationary shear flows of dense granular materials: a tentative continuum modelling. Eur Phys J E Soft Matter 2004; 14:127-135. [PMID: 15254832 DOI: 10.1140/epje/i2003-10141-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We propose a simple continuum model to interpret the shearing motion of dense, dry and cohesion-less granular media. Compressibility, dilatancy and Coulomb-like friction are the three basic ingredients. The granular stress is split into a rate-dependent part representing the rebound-less impacts between grains and a rate-independent part associated with long-lived contacts. Because we consider stationary flows only, the grain compaction and the grain velocity are the two main variables. The predicted velocity and compaction profiles are in apparent qualitative agreement with most of the experimental or numerical results concerning free-surface shear flows as well as confined shear flows.
Collapse
Affiliation(s)
- C Josserand
- Laboratoire de Modélisation en Mécanique, UMR 7607, Université P. et M. Curie, (Paris 6), France
| | | | | |
Collapse
|
30
|
Abstract
We study the growth of a periodic pattern in one dimension for a model of spinodal decomposition, the Cahn-Hilliard equation. We particularly focus on the intermediate region, where the nonlinearity cannot be neglected anymore, and before the coalescence dominates. The dynamics is captured through the standard technique of a solubility condition performed over a particular family of quasistatic solutions. The main result is that the dynamics along this particular class of solutions can be expressed in terms of a simple ordinary differential equation. The density profile of the stationary regime found at the end of the nonlinear growth is also well characterized. Numerical simulations correspond satisfactorily to the analytical results through three different methods and asymptotic dynamics are well recovered, even far from the region where the approximations hold.
Collapse
Affiliation(s)
- Simon Villain-Guillot
- Centre de Physique Moléculaire Optique et Hertzienne, Université Bordeaux I, 33406 Talence Cedex, France
| | | |
Collapse
|
31
|
Abstract
We present a combined experimental and theoretical study of memory effects in vibration-induced compaction of granular materials. In particular, the response of the system to an abrupt change in shaking intensity is measured. At short times after the perturbation a granular analog of aging in glasses is observed. Using a simple two-state model, we are able to explain this short-time response. We also discuss the possibility for the system to obey an approximate pseudo-fluctuation-dissipation theorem relationship and relate our work to earlier experimental and theoretical studies of the problem.
Collapse
Affiliation(s)
- C Josserand
- The James Franck Institute, The University of Chicago, Chicago, Illinois 60637, USA
| | | | | | | |
Collapse
|
32
|
Blair D, Aranson IS, Crabtree GW, Vinokur V, Tsimring LS, Josserand C. Patterns in thin vibrated granular layers: interfaces, hexagons, and superoscillons. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 2000; 61:5600-5610. [PMID: 11031614 DOI: 10.1103/physreve.61.5600] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/1999] [Indexed: 05/23/2023]
Abstract
A theoretical and experimental study of patterns in vibrated granular layers is presented. An order parameter model based on the parametric Ginzburg-Landau equation is used to describe strongly nonlinear excitations including hexagons, interfaces between flat antiphase domains, and new localized objects, superoscillons. The experiments confirm the existence of superoscillons and bound states of superoscillons and interfaces. On the basis of the order parameter model we predict analytically and confirm experimentally that additional subharmonic driving results in the controlled motion of interfaces.
Collapse
Affiliation(s)
- D Blair
- Argonne National Laboratory, Illinois 60439, USA
| | | | | | | | | | | |
Collapse
|
33
|
Jordan R, Josserand C. Self-organization in nonlinear wave turbulence. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 2000; 61:1527-1539. [PMID: 11046434 DOI: 10.1103/physreve.61.1527] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/1999] [Revised: 10/05/1999] [Indexed: 05/23/2023]
Abstract
We present a statistical equilibrium model of self-organization in a class of focusing, nonintegrable nonlinear Schrodinger (NLS) equations. The theory predicts that the asymptotic-time behavior of the NLS system is characterized by the formation and persistence of a large-scale coherent solitary wave, which minimizes the Hamiltonian given the conserved particle number (L2-norm squared), coupled with small-scale random fluctuations, or radiation. The fluctuations account for the difference between the conserved value of the Hamiltonian and the Hamiltonian of the coherent state. The predictions of the statistical theory are tested against the results of direct numerical simulations of NLS, and excellent qualitative and quantitative agreement is demonstrated. In addition, a careful inspection of the numerical simulations reveals interesting features of the transitory dynamics leading up to the long-time statistical equilibrium state starting from a given initial condition. As time increases, the system investigates smaller and smaller scales, and it appears that at a given intermediate time after the coalescense of the soliton structures has ended, the system is nearly in statistical equilibrium over the modes that it has investigated up to that time.
Collapse
Affiliation(s)
- R Jordan
- Department of Mathematical Sciences, Worcester Polytechnic Institute, 100 Institute Road, Worcester, Massachusetts 01609-2280, USA
| | | |
Collapse
|
34
|
Josserand C. Cavitation induced by explosion in an ideal fluid model. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1999; 60:482-91. [PMID: 11969786 DOI: 10.1103/physreve.60.482] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/1998] [Indexed: 04/18/2023]
Abstract
We discuss the problem of an explosion in the cubic-quintic superfluid model, in relation to some experimental observations. We show numerically that an explosion in such a model might induce a cavitation bubble for large enough energy. This gives a consistent view for rebound bubbles in superfluid and we identify the loss of energy between the successive rebounds as radiated waves. We compute self-similar solution of the explosion for the early stage, when no bubbles have been nucleated. The solution also gives the wave number of the excitations emitted through the shock wave.
Collapse
Affiliation(s)
- C Josserand
- The James Franck Institute, The University of Chicago, 5640 South Ellis Avenue, Chicago, Illinois 60637, USA.
| |
Collapse
|
35
|
|
36
|
Hayot F, Jayaprakash C, Josserand C. Long-wavelength properties of the Kuramoto-Sivashinsky equation. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1993; 47:911-915. [PMID: 9960085 DOI: 10.1103/physreve.47.911] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
37
|
Thomas J, Josserand C, Chastel C, Sagnet H, Lassale Y, Le Vourch C. [Cardiovascular involvement in the course of famine kwashiorkor. Clinical, radiologic, electrocardiographic and anatomical study (apropos of 655 cases)]. Bull Soc Pathol Exot Filiales 1973; 66:426-34. [PMID: 4801862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
38
|
Thomas J, Josserand C, Chastel C, Sagnet H, Lassalle Y, Le Vourch C. [Cardiovascular manifestations in protein malnutrition. Clinical, radiological, electrocardiographic and anatomical study]. Med Trop (Mars) 1972; 32:505-18. [PMID: 4646954] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
39
|
Gilguy G, Rosso AM, Bozzi JB, Josserand C. [Myocardial infarct in Negroes in Upper Volta]. Med Trop (Mars) 1972; 32:299-304. [PMID: 4673328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
40
|
Thomas J, Josserand C, Zimmer C. [Recent notions about clinical symptoms and therapy of cholera]. Med Trop (Mars) 1971; 31:699-709. [PMID: 5144927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
41
|
Sagnet H, Thomas J, Vovan L, Josserand C, Marie-Nelly A, Orsini A. [Results of a test for detection of sickle cell anemia in 1070 children with kwashiorkor due to famine]. Pediatrie 1971; 26:611-7. [PMID: 5315700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
|
42
|
Chastel C, Le Hir AL, Bezon A, Josserand C, Bereni J. [Acquired variations of hemoglobin A 2 level during viral hepatitis]. Presse Med (1893) 1971; 79:1283-4. [PMID: 5563075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
43
|
Josserand C, Arrighi E, Gilguy G, Manouvrier H. [Tuberculosis with abdominal localization]. Med Trop (Mars) 1970; 30:409-10. [PMID: 5464550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
44
|
Josserand C, Patacq-Croutzet J, Gilguy G, Sagnet H, Mafart Y. [Aspects of typhoid fever in the African adult in Ouagadougou]. Bull Soc Pathol Exot Filiales 1970; 63:155-60. [PMID: 5536444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
45
|
Sagnet H, Rousseau E, Josserand C, Revil H, Thomas J, Mafart Y. [Hemoglobinopathy H alpha-thalassemia]. Med Trop (Mars) 1970; 30:60-80. [PMID: 5447496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
46
|
Josserand C, Dujeu G, Sawadogo R, Pirame Y, Sagnet H, Thomas J, Revil H, Mafart Y. [Hemoglobin S-C disease. 18 cases in Upper-Volta]. Med Trop (Mars) 1970; 30:94-101. [PMID: 5463178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
47
|
Mafart Y, Thomas J, Chastel C, Revil H, Josserand C, Goasguen J, Philibert H, Sagnet H. [General characteristics of hemoglobin types]. Med Trop (Mars) 1970; 30:19-59. [PMID: 5447495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
48
|
Morineaud JP, Revil H, Sagnet H, Josserand C, Thomas J, Mafart Y. [Study in South Vietnam of a family with beta-thalassemia of type F]. Med Trop (Mars) 1970; 30:107-8. [PMID: 5447492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
49
|
Sagnet H, Delpy P, Josserand C, Paillet R, Bereni J, Mafart Y. [Study in Marseilles of a family with drepanocytemia coming from Guinea]. Med Trop (Mars) 1970; 30:81-2. [PMID: 5447497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|
50
|
Goasguen J, Costeseque P, Josserand C, Oddou A, Paillet R, Sagnet H. [Septicemia with endocarditis caused by Listeria monocytogenes in a 10-year-old Biafran child]. Med Trop (Mars) 1969; 29:699-701. [PMID: 4994574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|