1
|
Dudick S, Hess DW, Breedveld V. Liquid Repellence of Phobic Fiber Networks. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:7357-7364. [PMID: 35622465 DOI: 10.1021/acs.langmuir.2c01059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The wetting behavior of fiber networks, which are central to many research and industrial applications, can be difficult to predict accurately owing to their complex, heterogeneous structure. The cylindrical pore model, widely used to interpret and predict the forced wetting of hydrophobic porous materials, often does not yield correct results when working with fibrous networks like paper substrates and non-woven fabrics. This is because these materials exhibit variation in pore size, fiber length, and fiber diameter, as well as a reentrant pore geometry. Quantitative prediction of the critical wetting resistance of hydrophobized papers to arbitrary entrant liquids requires a more sophisticated analytical approach that considers this unique fibrous structure and the effect of stochastic variations within the pore matrix. In this work, we directly measure the critical breakthrough pressure for different porous substrates across various wetting entrant liquids. To isolate the effects of the structure and stochastics on critical wetting behavior of fibrous networks, we analyze additional materials strategically chosen for their subsets of structural features. Ultimately, we formulate a method that demonstrates physical reasonableness, numerical accuracy, and the ability to elucidate the effects of pore size, pore size distribution, fiber diameter, fiber diameter distribution, surface wettability, and liquid surface tension on critical breakthrough pressure of liquids through hydrophobic fibrous networks.
Collapse
Affiliation(s)
- Sumner Dudick
- School of Chemical and Biomolecular Engineering and Renewable Bioproducts Institute, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332-0100, United States
| | - Dennis W Hess
- School of Chemical and Biomolecular Engineering and Renewable Bioproducts Institute, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332-0100, United States
| | - Victor Breedveld
- School of Chemical and Biomolecular Engineering and Renewable Bioproducts Institute, Georgia Institute of Technology, 311 Ferst Drive NW, Atlanta, Georgia 30332-0100, United States
| |
Collapse
|
2
|
Najafi MN, Tizdast S, Cheraghalizadeh J, N HD. Invasion percolation in short-range and long-range disorder background. Phys Rev E 2021; 104:064119. [PMID: 35030889 DOI: 10.1103/physreve.104.064119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 11/23/2021] [Indexed: 06/14/2023]
Abstract
In the original invasion percolation model, a random number quantifies the role of necks, or generally the quality of pores, ignoring the structure of pores and impermeable regions (to which the invader cannot enter). In this paper, we investigate invasion percolation (IP), taking into account the impermeable regions, the configuration of which is modeled by ordinary and Ising-correlated site percolation (with short-range interactions, SRI), on top of which the IP dynamics is defined. We model the long-ranged correlations of pores by a random Coulomb potential (RCP). By examining various dynamical observables, we suggest that the critical exponents of Ising-correlated cases change considerably only in the vicinity of the critical point (critical temperature), while for the ordinary percolation case the exponents are robust against the occupancy parameter p. The properties of the model for the long-range interactions [LRI (RCP)] are completely different from the normal IP. In particular, the fractal dimension of the external frontier of the largest hole is nearly 4/3 for SRI far from the critical points, which is compatible with normal IP, while it converges to 1.099±0.04 for RCP. For the latter case, the time dependence of our observables is divided into three parts: the power law (short time), the logarithmic (moderate time), and the linear (long time) regimes. The second crossover time is shown to go to infinity in the thermodynamic limit, whereas the first crossover time is nearly unchanged, signaling the dominance of the logarithmic regime. The average gyration radius of the growing clusters, the length of their external perimeter, and the corresponding roughness are shown to be nearly constant for the long-time regime in the thermodynamic limit.
Collapse
Affiliation(s)
- M N Najafi
- Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran
| | - S Tizdast
- Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran
| | - J Cheraghalizadeh
- Department of Physics, University of Mohaghegh Ardabili, P.O. Box 179, Ardabil, Iran
| | - H Dashti N
- School of Physics, Korea Institute for Advanced Study, Seoul 02455, Korea
| |
Collapse
|
3
|
Ortez R, Rundle JB, Turcotte DL. Universality class for loopless invasion percolation models and a percolation avalanche burst model for hydraulic fracturing. Phys Rev E 2021; 103:012310. [PMID: 33601580 DOI: 10.1103/physreve.103.012310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 09/07/2020] [Indexed: 11/07/2022]
Abstract
Invasion percolation is a model that was originally proposed to describe growing networks of fractures. Here we describe a loopless algorithm on random lattices, coupled with an avalanche-based model for bursts. The model reproduces the characteristic b-value seismicity and spatial distribution of bursts consistent with earthquakes resulting from hydraulic fracturing ("fracking"). We test models for both site invasion percolation and bond invasion percolation. These have differences on the scale of site and bond lengths l. But since the networks are characterized by their large-scale behavior, l≪L, we find small differences between scaling exponents. Though data may not differentiate between models, our results suggest that both models belong to different universality classes.
Collapse
Affiliation(s)
- Ronaldo Ortez
- Department of Physics, University of California, Davis, California 95616, USA
| | - John B Rundle
- Department of Physics, University of California, Davis, California 95616, USA.,Department of Earth and Planetary Science, University of California, Davis, California 95616, USA.,Santa Fe Institute, Santa Fe, New Mexico 87501, USA
| | - Donald L Turcotte
- Department of Geology, University of California, Davis, California 95616, USA
| |
Collapse
|
4
|
Farzaneh M, Ström H, Zanini F, Carmignato S, Sasic S, Maggiolo D. Pore-Scale Transport and Two-Phase Fluid Structures in Fibrous Porous Layers: Application to Fuel Cells and Beyond. Transp Porous Media 2020; 136:245-270. [PMID: 33250547 PMCID: PMC7682777 DOI: 10.1007/s11242-020-01509-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 11/10/2020] [Indexed: 11/16/2022]
Abstract
We present pore-scale simulations of two-phase flows in a reconstructed fibrous porous layer. The three-dimensional microstructure of the material, a fuel cell gas diffusion layer, is acquired via X-ray computed tomography and used as input for lattice Boltzmann simulations. We perform a quantitative analysis of the multiphase pore-scale dynamics, and we identify the dominant fluid structures governing mass transport. The results show the existence of three different regimes of transport: a fast inertial dynamics at short times, characterised by a compact uniform front, a viscous-capillary regime at intermediate times, where liquid is transported along a gradually increasing number of preferential flow paths of the size of one–two pores, and a third regime at longer times, where liquid, after having reached the outlet, is exclusively flowing along such flow paths and the two-phase fluid structures are stabilised. We observe that the fibrous layer presents significant variations in its microscopic morphology, which have an important effect on the pore invasion dynamics, and counteract the stabilising viscous force. Liquid transport is indeed affected by the presence of microstructure-induced capillary pressures acting adversely to the flow, leading to capillary fingering transport mechanism and unstable front displacement, even in the absence of hydrophobic treatments of the porous material. We propose a macroscopic model based on an effective contact angle that mimics the effects of the such a dynamic capillary pressure. Finally, we underline the significance of the results for the optimal design of face masks in an effort to mitigate the current COVID-19 pandemic.
Collapse
Affiliation(s)
- Meisam Farzaneh
- Department of Mechanics and Maritime Sciences, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Henrik Ström
- Department of Mechanics and Maritime Sciences, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Filippo Zanini
- Department of Management and Engineering, University of Padova, Stradella San Nicola 3, 36100 Vicenza, Italy
| | - Simone Carmignato
- Department of Management and Engineering, University of Padova, Stradella San Nicola 3, 36100 Vicenza, Italy
| | - Srdjan Sasic
- Department of Mechanics and Maritime Sciences, Chalmers University of Technology, 412 96 Göteborg, Sweden
| | - Dario Maggiolo
- Department of Mechanics and Maritime Sciences, Chalmers University of Technology, 412 96 Göteborg, Sweden
| |
Collapse
|
5
|
Moura M, Måløy KJ, Flekkøy EG, Toussaint R. Verification of a Dynamic Scaling for the Pair Correlation Function during the Slow Drainage of a Porous Medium. PHYSICAL REVIEW LETTERS 2017; 119:154503. [PMID: 29077469 DOI: 10.1103/physrevlett.119.154503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Indexed: 06/07/2023]
Abstract
In this Letter we give experimental grounding for the remarkable observation made by Furuberg et al. [Phys. Rev. Lett. 61, 2117 (1988)PRLTAO0031-900710.1103/PhysRevLett.61.2117] of an unusual dynamic scaling for the pair correlation function N(r,t) during the slow drainage of a porous medium. Those authors use an invasion percolation algorithm to show numerically that the probability of invasion of a pore at a distance r away and after a time t from the invasion of another pore scales as N(r,t)∝r^{-1}f(r^{D}/t), where D is the fractal dimension of the invading cluster and the function f(u)∝u^{1.4}, for u≪1 and f(u)∝u^{-0.6}, for u≫1. Our experimental setup allows us to have full access to the spatiotemporal evolution of the invasion, which is used to directly verify this scaling. Additionally, we connect two important theoretical contributions from the literature to explain the functional dependency of N(r,t) and the scaling exponent for the short-time regime (t≪r^{D}). A new theoretical argument is developed to explain the long-time regime exponent (t≫r^{D}).
Collapse
Affiliation(s)
- Marcel Moura
- PoreLab, Department of Physics, University of Oslo, PO Box 1048, Blindern, N-0316, Oslo, Norway
| | - Knut Jørgen Måløy
- PoreLab, Department of Physics, University of Oslo, PO Box 1048, Blindern, N-0316, Oslo, Norway
| | - Eirik Grude Flekkøy
- PoreLab, Department of Physics, University of Oslo, PO Box 1048, Blindern, N-0316, Oslo, Norway
| | - Renaud Toussaint
- Université de Strasbourg, CNRS, IPGS UMR 7516, F-67000 Strasbourg, France and PoreLab, Department of Physics, University of Oslo, PO Box 1048, Blindern, N-0316, Oslo, Norway
| |
Collapse
|
6
|
Greenbaum G, Fefferman NH. Application of network methods for understanding evolutionary dynamics in discrete habitats. Mol Ecol 2017; 26:2850-2863. [DOI: 10.1111/mec.14059] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 02/03/2017] [Accepted: 02/06/2017] [Indexed: 02/02/2023]
Affiliation(s)
- Gili Greenbaum
- Department of Solar Energy and Environmental Physics and Mitrani Department of Desert Ecology; The Jacob Blaustein Institutes for Desert Research; Ben-Gurion University of the Negev; Midreshet Ben-Gurion 84990 Israel
| | - Nina H. Fefferman
- Department of Ecology and Evolutionary Biology; University of Tennessee; Knoxville 37996 TN USA
| |
Collapse
|
7
|
Computer Simulations of the Tumor Vasculature: Applications to Interstitial Fluid Flow, Drug Delivery, and Oxygen Supply. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2016; 936:31-72. [PMID: 27739042 DOI: 10.1007/978-3-319-42023-3_3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Tumor vasculature, the blood vessel network supplying a growing tumor with nutrients such as oxygen or glucose, is in many respects different from the hierarchically organized arterio-venous blood vessel network in normal tissues. Angiogenesis (the formation of new blood vessels), vessel cooption (the integration of existing blood vessels into the tumor vasculature), and vessel regression remodel the healthy vascular network into a tumor-specific vasculature. Integrative models, based on detailed experimental data and physical laws, implement, in silico, the complex interplay of molecular pathways, cell proliferation, migration, and death, tissue microenvironment, mechanical and hydrodynamic forces, and the fine structure of the host tissue vasculature. With the help of computer simulations high-precision information about blood flow patterns, interstitial fluid flow, drug distribution, oxygen and nutrient distribution can be obtained and a plethora of therapeutic protocols can be tested before clinical trials. This chapter provides an overview over the current status of computer simulations of vascular remodeling during tumor growth including interstitial fluid flow, drug delivery, and oxygen supply within the tumor. The model predictions are compared with experimental and clinical data and a number of longstanding physiological paradigms about tumor vasculature and intratumoral solute transport are critically scrutinized.
Collapse
|
8
|
Yang F, Griffa M, Bonnin A, Mokso R, DI Bella C, Münch B, Kaufmann R, Lura P. Visualization of water drying in porous materials by X-ray phase contrast imaging. J Microsc 2015; 261:88-104. [PMID: 26469285 DOI: 10.1111/jmi.12319] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 08/30/2015] [Indexed: 11/30/2022]
Abstract
We present in this study results from X-ray tomographic microscopy with synchrotron radiation performed both in attenuation and phase contrast modes on a limestone sample during two stages of water drying. No contrast agent was used in order to increase the X-ray attenuation by water. We show that only by using the phase contrast mode it is possible to achieve enough water content change resolution to investigate the drying process at the pore-scale. We performed 3D image analysis of the time-differential phase contrast tomogram. We show by the results of such analysis that it is possible to obtain a reliable characterization of the spatial redistribution of water in the resolved pore system in agreement with what expected from the theory of drying in porous media and from measurements performed with other approaches. We thus show the potential of X-ray phase contrast imaging for pore-scale investigations of reactive water transport processes which cannot be imaged by adding a contrast agent for exploiting the standard attenuation contrast imaging mode.
Collapse
Affiliation(s)
- F Yang
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland.,Institute for Building Materials (IfB), Swiss Federal Institute of Technology Zurich (ETHZ), Zürich, Switzerland
| | - M Griffa
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
| | - A Bonnin
- Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland.,Center for Biomedical Imaging, Swiss Federal Institute of Technology Lausanne (EPFL), Lausanne, Switzerland
| | - R Mokso
- Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
| | - C DI Bella
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland.,Institute for Building Materials (IfB), Swiss Federal Institute of Technology Zurich (ETHZ), Zürich, Switzerland
| | - B Münch
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
| | - R Kaufmann
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland
| | - P Lura
- Empa, Swiss Federal Laboratories for Materials Science and Technology, Dübendorf, Switzerland.,Institute for Building Materials (IfB), Swiss Federal Institute of Technology Zurich (ETHZ), Zürich, Switzerland
| |
Collapse
|
9
|
Pore Network Modeling of Drying Processes in Macroporous Materials: Effects of Gravity, Mass Boundary Layer and Pore Microstructure. Transp Porous Media 2015. [DOI: 10.1007/s11242-015-0529-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
10
|
Norris JQ, Turcotte DL, Rundle JB. Loopless nontrapping invasion-percolation model for fracking. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2014; 89:022119. [PMID: 25353434 DOI: 10.1103/physreve.89.022119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Indexed: 06/04/2023]
Abstract
Recent developments in hydraulic fracturing (fracking) have enabled the recovery of large quantities of natural gas and oil from old, low-permeability shales. These developments include a change from low-volume, high-viscosity fluid injection to high-volume, low-viscosity injection. The injected fluid introduces distributed damage that provides fracture permeability for the extraction of the gas and oil. In order to model this process, we utilize a loopless nontrapping invasion percolation previously introduced to model optimal polymers in a strongly disordered medium and for determining minimum energy spanning trees on a lattice. We performed numerical simulations on a two-dimensional square lattice and find significant differences from other percolation models. Additionally, we find that the growing fracture network satisfies both Horton-Strahler and Tokunaga network statistics. As with other invasion percolation models, our model displays burst dynamics, in which the cluster extends rapidly into a connected region. We introduce an alternative definition of bursts to be a consecutive series of opened bonds whose strengths are all below a specified value. Using this definition of bursts, we find good agreement with a power-law frequency-area distribution. These results are generally consistent with the observed distribution of microseismicity observed during a high-volume frack.
Collapse
Affiliation(s)
- J Quinn Norris
- Department of Physics, One Shields Ave., University of California, Davis, California 95616, USA
| | - Donald L Turcotte
- Department of Geology, One Shields Ave., University of California, Davis, California 95616, USA
| | - John B Rundle
- Department of Physics, One Shields Ave., University of California, Davis, California 95616, USA and Department of Geology, One Shields Ave., University of California, Davis, California 95616, USA and Santa Fe Institute, Santa Fe, New Mexico 87501, USA
| |
Collapse
|
11
|
Zhu P, Papadopoulos KD. Visualization and quantification of two-phase flow in transparent miniature packed beds. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2012; 86:046313. [PMID: 23214683 DOI: 10.1103/physreve.86.046313] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 07/01/2012] [Indexed: 06/01/2023]
Abstract
Optical microscopy was used to visualize the flow of two phases [British Petroleum (BP) oil and an aqueous surfactant phase] in confined space, three-dimensional, transparent, natural porous media. The porous media consisted of water-wet cryolite grains packed inside cylindrical, glass microchannels, thus producing microscopic packed beds. Primary drainage of BP oil displacing an aqueous surfactant phase was studied at capillary numbers that varied between 10(-6) and 10(-2). The confinement space had a significant effect on the flow behavior. Phenomena of burst motion and capillary fingering were observed for low capillary numbers due to the domination of capillary forces. It was discovered that breakthrough time and capillary number bear a log-log scale linear relationship, based on which a generalized correlation between oil travel distance x and time t was found empirically.
Collapse
Affiliation(s)
- Peixi Zhu
- Department of Chemical and Biomolecular Engineering, Tulane University, New Orleans, Louisiana 70118, USA.
| | | |
Collapse
|
12
|
Welter M, Rieger H. Physical determinants of vascular network remodeling during tumor growth. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2010; 33:149-163. [PMID: 20607341 DOI: 10.1140/epje/i2010-10611-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2010] [Indexed: 05/29/2023]
Abstract
The process in which a growing tumor transforms a hierarchically organized arterio-venous blood vessel network into a tumor specific vasculature is analyzed with a theoretical model. The physical determinants of this remodeling involve the morphological and hydrodynamic properties of the initial network, generation of new vessels (sprouting angiogenesis), vessel dilation (circumferential growth), vessel regression, tumor cell proliferation and death, and the interdependence of these processes via spatio-temporal changes of blood flow parameters, oxygen/nutrient supply and growth factor concentration fields. The emerging tumor vasculature is non-hierarchical, compartmentalized into well-characterized zones, displays a complex geometry with necrotic zones and "hot spots" of increased vascular density and blood flow of varying size, and transports drug injections efficiently. Implications for current theoretical views on tumor-induced angiogenesis are discussed.
Collapse
Affiliation(s)
- M Welter
- Theoretical Physics, Saarland University, 66041, Saarbrücken, Germany
| | | |
Collapse
|
13
|
|
14
|
Paul R. Flow-correlated dilution of a regular network leads to a percolating network during tumor-induced angiogenesis. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2009; 30:101-114. [PMID: 19777279 DOI: 10.1140/epje/i2009-10513-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2009] [Revised: 06/24/2009] [Accepted: 09/02/2009] [Indexed: 05/28/2023]
Abstract
We study a simplified stochastic model for the vascularization of a growing tumor, incorporating the formation of new blood vessels at the tumor periphery as well as their regression in the tumor center. The resulting morphology of the tumor vasculature differs drastically from the original one. We demonstrate that the probabilistic vessel collapse has to be correlated with the blood shear force in order to yield percolating network structures. The resulting tumor vasculature displays fractal properties. Fractal dimension, Micro-Vascular Density (MVD), blood flow and shear force have been computed for a wide range of parameters.
Collapse
Affiliation(s)
- R Paul
- Department of Neurobiology, University of California, Davis, CA 95616, USA.
| |
Collapse
|
15
|
Bartha K, Rieger H. Vascular network remodeling via vessel cooption, regression and growth in tumors. J Theor Biol 2006; 241:903-18. [PMID: 16545398 DOI: 10.1016/j.jtbi.2006.01.022] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2005] [Revised: 01/23/2006] [Accepted: 01/23/2006] [Indexed: 11/27/2022]
Abstract
The transformation of the regular vasculature in normal tissue into a highly inhomogeneous tumor specific capillary network is described by a theoretical model incorporating tumor growth, vessel cooption, neo-vascularization, vessel collapse and cell death. Compartmentalization of the tumor into several regions differing in vessel density, diameter and in necrosis is observed for a wide range of parameters in agreement with the vessel morphology found in human melanoma. In accord with data for human melanoma the model predicts that microvascular density (MVD), regarded as an important diagnostic tool in cancer treatment, does not necessarily determine the tempo of tumor progression. Instead it is suggested that the MVD of the original tissue as well as the metabolic demand of the individual tumor cell plays the major role in the initial stages of tumor growth.
Collapse
Affiliation(s)
- K Bartha
- Department of Medical Biochemistry, Semmelweis University, Budapest, Hungary
| | | |
Collapse
|
16
|
Tanguy A, Leonforte F, Barrat JL. Plastic response of a 2D Lennard-Jones amorphous solid: detailed analysis of the local rearrangements at very slow strain rate. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2006; 20:355-64. [PMID: 16862398 DOI: 10.1140/epje/i2006-10024-2] [Citation(s) in RCA: 124] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2006] [Accepted: 07/13/2006] [Indexed: 05/11/2023]
Abstract
We analyze in detail the atomistic response of a model amorphous material submitted to plastic shear in the athermal, quasi-static limit. After a linear stress-strain behavior, the system undergoes a noisy plastic flow. We show that the plastic flow is spatially heterogeneous. Two kinds of plastic events occur in the system: quadrupolar localized rearrangements, and shear bands. The analysis of the individual motion of a particle shows also two regimes: a hyper-diffusive regime followed by a diffusive regime, even at zero temperature.
Collapse
Affiliation(s)
- A Tanguy
- Laboratoire de Physique de la Matière Condensée et Nanostructures, Université Lyon 1, CNRS, UMR 5586 Domaine Scientifique de la Doua, F-69622, Villeurbanne cedex, France.
| | | | | |
Collapse
|
17
|
Lee NK, Hong S. Modeling collective behavior of molecules in nanoscale direct deposition processes. J Chem Phys 2006; 124:114711. [PMID: 16555914 DOI: 10.1063/1.2174960] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We present a theoretical model describing the collective behavior of molecules in nanoscale direct deposition processes such as dip-pen nanolithography. We show that strong intermolecular interactions combined with nonuniform substrate-molecule interactions can produce various shapes of molecular patterns including fractal-like structures. Computer simulations reveal circular and starlike patterns at low and intermediate densities of preferentially attractive surface sites, respectively. At large density of such surface sites, the molecules form a two-dimensional invasion percolation cluster. Previous experimental results showing anisotropic patterns of various chemical and biological molecules correspond to the starlike regime [P. Manandhar et al., Phys. Rev. Lett. 90, 115505 (2003); J.-H. Lim and C. A. Mirkin, Adv. Mater. (Weinheim, Ger.) 14, 1474 (2002); D. L. Wilson et al., Proc. Natl. Acad. Sci. U.S.A. 98, 13660 (2001); M. Su et al., Appl. Phys. Lett. 84, 4200 (2004); R. McKendry et al., Nano Lett. 2, 713 (2002); H. Zhou et al., Appl. Surf. Sci. 236, 18 (2004); G. Agarwal et al., J. Am. Chem. Soc. 125, 580 (2003)].
Collapse
Affiliation(s)
- Nam-Kyung Lee
- Institute of Fundamental Physics, Department of Physics, Sejong University, Seoul 143-743, South Korea.
| | | |
Collapse
|
18
|
Lee DS, Rieger H, Bartha K. Flow correlated percolation during vascular remodeling in growing tumors. PHYSICAL REVIEW LETTERS 2006; 96:058104. [PMID: 16486998 DOI: 10.1103/physrevlett.96.058104] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2005] [Indexed: 05/06/2023]
Abstract
A theoretical model based on the molecular interactions between a growing tumor and a dynamically evolving blood vessel network describes the transformation of the regular vasculature in normal tissues into a highly inhomogeneous tumor specific capillary network. The emerging morphology, characterized by the compartmentalization of the tumor into several regions differing in vessel density, diameter, and necrosis, is in accordance with experimental data for human melanoma. Vessel collapse due to a combination of severely reduced blood flow and solid stress exerted by the tumor leads to a correlated percolation process that is driven towards criticality by the mechanism of hydrodynamic vessel stabilization.
Collapse
Affiliation(s)
- D-S Lee
- Theoretische Physik, Universität des Saarlandes, 66041 Saarbrücken, Germany
| | | | | |
Collapse
|
19
|
Ramstad T, Hansen A. Cluster evolution in steady-state two-phase flow in porous media. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2006; 73:026306. [PMID: 16605453 DOI: 10.1103/physreve.73.026306] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Indexed: 05/08/2023]
Abstract
We report numerical studies of the cluster development of two-phase flow in a steady-state environment of porous media. This is done by including biperiodic boundary conditions in a two-dimensional flow simulator. Initial transients of wetting and nonwetting phases that evolve before steady state has occurred, undergo a crossover where every initial pattern is broken up. For flow dominated by capillary effects with capillary numbers in order of 10(-5), we find that around a critical saturation of nonwetting fluid the nonwetting clusters of size have a power-law distribution ns similar to s(-tau)with the exponent tau=1.92+/-0.04 for large clusters. This is a lower value than the result for ordinary percolation. We also present scaling relation and time evolution of the structure and global pressure.
Collapse
Affiliation(s)
- Thomas Ramstad
- Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.
| | | |
Collapse
|
20
|
Hashemi M, Dabir B, Sahimi M. Dynamics of two-phase flow in porous media: Simultaneous invasion of two fluids. AIChE J 2006. [DOI: 10.1002/aic.690450702] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
21
|
Vandembroucq D, Roux S. Large-scale numerical simulations of ultrametric long-range depinning. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2004; 70:026103. [PMID: 15447541 DOI: 10.1103/physreve.70.026103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2004] [Indexed: 05/24/2023]
Abstract
The depinning of an elastic line interacting with a quenched disorder is studied for long-range interactions, applicable to in-plane crack propagation or wetting. An ultrametric distance is introduced instead of the Euclidean distance, allowing for a drastic reduction of the numerical complexity of the problem. Based on large-scale simulations, two to three orders of magnitude larger than previously considered, we obtain a very precise determination of critical exponents which are shown to be indistinguishable from their Euclidean metric counterparts. Moreover, the scaling functions are shown to be unchanged. The choice of an ultrametric distance thus does not affect the universality class of the depinning transition and opens the way to an analytic real-space renormalization-group approach.
Collapse
Affiliation(s)
- Damien Vandembroucq
- Unité Mixte CNRS/Saint-Gobain Surface du Verre et Interfaces, 39 Quai Lucien Lefranc, 93303 Aubervilliers Cedex, France
| | | |
Collapse
|
22
|
Ferer M, Ji C, Bromhal GS, Cook J, Ahmadi G, Smith DH. Crossover from capillary fingering to viscous fingering for immiscible unstable flow:Experiment and modeling. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2004; 70:016303. [PMID: 15324165 DOI: 10.1103/physreve.70.016303] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2003] [Revised: 02/19/2004] [Indexed: 05/24/2023]
Abstract
Invasion percolation with trapping (IPT) and diffusion-limited aggregation (DLA) are simple fractal models, which are known to describe two-phase flow in porous media at well defined, but unphysical limits of the fluid properties and flow conditions. A decade ago, Fernandez, Rangel, and Rivero predicted a crossover from IPT (capillary fingering) to DLA (viscous fingering) for the injection of a zero-viscosity fluid as the injection velocity was increased from zero. [Phys. Rev. Lett. 67, 2958 (1991)]]. We have performed experiments in which air is injected into a glass micromodel to displace water. These experiments clearly demonstrate this crossover as the injection velocity of the air is increased. Furthermore, simulations, using our standard pore-level model, also support the predicted IPT-to-DLA crossover, as well as the predicted power-law behavior of the characteristic crossover length.
Collapse
Affiliation(s)
- M Ferer
- US D.O.E., National Energy Technology Laboratory, P. O. Box 880, Morgantown, West Virginia 26507-0880, USA
| | | | | | | | | | | |
Collapse
|
23
|
Ferer M, Bromhal GS, Smith DH. Pore-level modeling of drainage: crossover from invasion percolation fingering to compact flow. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2003; 67:051601. [PMID: 12786157 DOI: 10.1103/physreve.67.051601] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2002] [Revised: 01/08/2003] [Indexed: 05/24/2023]
Abstract
A pore-level model of drainage, which has been quantitatively validated, is used to study the effect of increased injection rate (i.e., increased capillary number) upon the flow, with matched-viscosity fluids. For small enough capillary number, the flows from the model correctly reproduce the flows from the invasion percolation with trapping (IPWT) model. As the capillary number is increased, the early-time flows mimic those of the IPWT-model, but then deviate towards compact flow at a characteristic time that decreases as the capillary number increases. That is, the larger the capillary number, the sooner the flow crosses over from IPWT flows towards compact (linear) flows.
Collapse
Affiliation(s)
- M Ferer
- National Energy Technology Laboratory, and Department of Physics, University of West Virginia, Morgantown, West Virginia 26507-0880, USA
| | | | | |
Collapse
|
24
|
Asikainen J, Majaniemi S, Dubé M, Ala-Nissila T. Interface dynamics and kinetic roughening in fractals. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2002; 65:052104. [PMID: 12059616 DOI: 10.1103/physreve.65.052104] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2001] [Indexed: 05/23/2023]
Abstract
We consider the dynamics and kinetic roughening of single-valued interfaces in two-dimensional fractal media. Assuming that the local height difference distribution function of the fronts obeys Levý statistics with a well-defined power-law decay exponent, we derive analytic expressions for the local scaling exponents. We also show that the kinetic roughening of the interfaces displays anomalous scaling and multiscaling in the relevant correlation functions. For invasion percolation models, the exponents can be obtained from the fractal geometry of percolation clusters. Our predictions are in excellent agreement with numerical simulations.
Collapse
Affiliation(s)
- J Asikainen
- Helsinki Institute of Physics and Laboratory of Physics, Helsinki University of Technology, P.O. Box 1100, FIN-02015 HUT, Espoo, Finland
| | | | | | | |
Collapse
|
25
|
Alava M, Duxbury P, Moukarzel C, Rieger H. Exact combinatorial algorithms: Ground states of disordered systems. ACTA ACUST UNITED AC 2001. [DOI: 10.1016/s1062-7901(01)80009-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
|
26
|
Knackstedt MA, Sahimi M, Sheppard AP. Invasion percolation with long-range correlations: first-order phase transition and nonuniversal scaling properties. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 2000; 61:4920-4934. [PMID: 11031535 DOI: 10.1103/physreve.61.4920] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/1999] [Indexed: 05/23/2023]
Abstract
We present the results of extensive Monte Carlo simulations of the invasion percolation model with trapping (TIP) with long-range correlations, a problem which is relevant to multiphase flow in field-scale porous media, such as oil reservoirs and groundwater aquifers, as well as flow in rock fractures. The correlations are generated by a fractional Brownian motion characterized by a Hurst exponent H. We employ a highly efficient algorithm for simulating TIP, and a novel method for identifying the backbone of TIP clusters. Both site and bond TIP are studied. Our study indicates that the backbone of bond TIP is loopless and completely different from that of site TIP. We obtain precise estimates for the fractal dimensions of the sample-spanning cluster (SSC), the minimal path, and the backbone of site and bond TIP, and analyze the size distribution of the trapped clusters, in order to identify all the possible universality classes of TIP with long-range correlations. For site TIP with H > 1/2 the SSC and its backbone are compact, indicating a first-order phase transition at the percolation threshold, while the minimal paths are essentially straigth lines. For H < 1/2 the SSC, its backbone, and the minimal paths are all fractal with fractal dimensions that depend on the Hurst exponent H. The fractal dimension of the loopless backbone for bond TIP is much less than that of site TIP for any H.
Collapse
Affiliation(s)
- MA Knackstedt
- Department of Applied Mathematics, Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT, Australia
| | | | | |
Collapse
|
27
|
Auradou H, Måløy KJ, Schmittbuhl J, Hansen A, Bideau D. Competition between correlated buoyancy and uncorrelated capillary effects during drainage. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1999; 60:7224-34. [PMID: 11970666 DOI: 10.1103/physreve.60.7224] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/1999] [Indexed: 04/18/2023]
Abstract
We study drainage in a horizontally oriented rough fracture joint filled with glass beads. The shape and structure of the drained areas is the result of competition between two effects: (1) variations in the capillary thresholds necessary to be overcome in order to drain the pores and (2) the height variations due to the roughness of the fracture joint. These height variations have long range correlations due to the self-affine nature of the fracture. The capillary thresholds are uncorrelated. We tune the relative strength of these two effects by performing experiments in a centrifuge and thus changing the "strength of gravity." As gravity is increased, the structure of the drained areas change from that of invasion percolation to a structure composed of compact blobs linked together by threadlike links. We study both the geometry and the effect of trapping while changing acceleration of gravity from zero to 6g(0). At high centrifugal acceleration we further observe fragmentation, migration and coalescence of bubbles of fluid inside the drained areas.
Collapse
Affiliation(s)
- H Auradou
- Fysisk Institutt, Universitetet i Oslo, Postboks 1048 Blindern, N-0316 Oslo, Norway
| | | | | | | | | |
Collapse
|
28
|
Craciunescu OI, Das SK, Clegg ST. Dynamic contrast-enhanced MRI and fractal characteristics of percolation clusters in two-dimensional tumor blood perfusion. J Biomech Eng 1999; 121:480-6. [PMID: 10529914 DOI: 10.1115/1.2835076] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Dynamic contrast-enhanced magnetic resonance imaging (DE-MRI) of the tumor blood pool is used to study tumor tissue perfusion. The results are then analyzed using percolation models. Percolation cluster geometry is depicted using the wash-in component of MRI contrast signal intensity. Fractal characteristics are determined for each two-dimensional cluster. The invasion percolation model is used to describe the evolution of the tumor perfusion front. Although tumor perfusion can be depicted rigorously only in three dimensions, two-dimensional cases are used to validate the methodology. It is concluded that the blood perfusion in a two-dimensional tumor vessel network has a fractal structure and that the evolution of the perfusion front can be characterized using invasion percolation. For all the cases studied, the front starts to grow from the periphery of the tumor (where the feeding vessel was assumed to lie) and continues to grow toward the center of the tumor, accounting for the well-documented perfused periphery and necrotic core of the tumor tissue.
Collapse
Affiliation(s)
- O I Craciunescu
- Department of Radiation Oncology, Duke University Medical Center, Durham, NC 27710, USA.
| | | | | |
Collapse
|
29
|
Kuntz M, Perkovic O, Dahmen K, Roberts B, Sethna J. Hysteresis, avalanches, and noise. Comput Sci Eng 1999. [DOI: 10.1109/5992.774844] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
30
|
|
31
|
Vandewalle N, Ausloos M. Static and dynamic epidemics on looped chains and looped trees. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1996; 54:3499-3507. [PMID: 9965495 DOI: 10.1103/physreve.54.3499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
32
|
Barabási AL. Invasion percolation and global optimization. PHYSICAL REVIEW LETTERS 1996; 76:3750-3753. [PMID: 10061100 DOI: 10.1103/physrevlett.76.3750] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
33
|
Paczuski M, Maslov S, Bak P. Avalanche dynamics in evolution, growth, and depinning models. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1996; 53:414-443. [PMID: 9964272 DOI: 10.1103/physreve.53.414] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
34
|
Vandewalle N, Ausloos M. Lack of universality in two-dimensional multicomponent spreading phenomena. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1995; 52:3447-3454. [PMID: 9963820 DOI: 10.1103/physreve.52.3447] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
35
|
Huber G, Jensen MH, Sneppen K. Distributions of self-interactions and voids in (1+1)-dimensional directed percolation. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1995; 52:R2133-R2136. [PMID: 9963795 DOI: 10.1103/physreve.52.r2133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
36
|
Frette V, Feder J, Jossang T, Meakin P, Måloy KJ. Fast, immiscible fluid-fluid displacement in three-dimensional porous media at finite viscosity contrast. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1994; 50:2881-2890. [PMID: 9962330 DOI: 10.1103/physreve.50.2881] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
37
|
Hirsch LM, Thompson AH. Size-dependent scaling of capillary invasion including buoyancy and pore size distribution effects. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1994; 50:2069-2086. [PMID: 9962210 DOI: 10.1103/physreve.50.2069] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
38
|
Falk J, Jensen MH, Sneppen K. Intermittent dynamics and self-organized depinning in propagating fronts. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1994; 49:2804-2808. [PMID: 9961546 DOI: 10.1103/physreve.49.2804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
39
|
Schwarzer S, Havlin S, Stanley HE. Scaling properties of diffusion-limited aggregation, the percolation hull, and invasion percolation. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 1994; 49:1182-1197. [PMID: 9961327 DOI: 10.1103/physreve.49.1182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
40
|
Jensen P, Melinon P, Treilleux M, Hu JX, Dumas J, Hoareau A, Cabaud B. Direct observation of the infinite percolation cluster in thin films: Evidence for a double percolation process. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 47:5008-5012. [PMID: 10006661 DOI: 10.1103/physrevb.47.5008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
41
|
Blunt M, King MJ, Scher H. Simulation and theory of two-phase flow in porous media. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:7680-7699. [PMID: 9908120 DOI: 10.1103/physreva.46.7680] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
42
|
Meakin P, Feder J, Frette V, Jossang T. Invasion percolation in a destabilizing gradient. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:3357-3368. [PMID: 9908503 DOI: 10.1103/physreva.46.3357] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
43
|
Bryant S, Blunt M. Prediction of relative permeability in simple porous media. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:2004-2011. [PMID: 9908335 DOI: 10.1103/physreva.46.2004] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
44
|
Octavio M. Invasion percolation into a percolating cluster. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1992; 46:994-1001. [PMID: 9908202 DOI: 10.1103/physreva.46.994] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
45
|
Frette V, Feder J, Jossang T, Meakin P. Buoyancy-driven fluid migration in porous media. PHYSICAL REVIEW LETTERS 1992; 68:3164-3167. [PMID: 10045630 DOI: 10.1103/physrevlett.68.3164] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
46
|
Martys N, Robbins MO, Cieplak M. Scaling relations for interface motion through disordered media: Application to two-dimensional fluid invasion. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:12294-12306. [PMID: 9999384 DOI: 10.1103/physrevb.44.12294] [Citation(s) in RCA: 71] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
47
|
Fernández JF, Rangel R, Rivero J. Crossover length from invasion percolation to diffusion-limited aggregation in porous media. PHYSICAL REVIEW LETTERS 1991; 67:2958-2961. [PMID: 10044602 DOI: 10.1103/physrevlett.67.2958] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
48
|
Birovljev A, Furuberg L, Feder J, Jssang T, Mly KJ, Aharony A. Gravity invasion percolation in two dimensions: Experiment and simulation. PHYSICAL REVIEW LETTERS 1991; 67:584-587. [PMID: 10044935 DOI: 10.1103/physrevlett.67.584] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
|
49
|
Pietronero L, Schneider WR, Stella AL. Percolation and invasion percolation as fractal growth problems. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:7496-7499. [PMID: 9904070 DOI: 10.1103/physreva.42.7496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|
50
|
Blunt M, King P. Macroscopic parameters from simulations of pore scale flow. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:4780-4787. [PMID: 9904588 DOI: 10.1103/physreva.42.4780] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
|