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Soyama H, Liang X, Yashiro W, Kajiwara K, Asimakopoulou EM, Bellucci V, Birnsteinova S, Giovanetti G, Kim C, Kirkwood HJ, Koliyadu JCP, Letrun R, Zhang Y, Uličný J, Bean R, Mancuso AP, Villanueva-Perez P, Sato T, Vagovič P, Eakins D, Korsunsky AM. Revealing the origins of vortex cavitation in a Venturi tube by high speed X-ray imaging. ULTRASONICS SONOCHEMISTRY 2023; 101:106715. [PMID: 38061251 PMCID: PMC10750113 DOI: 10.1016/j.ultsonch.2023.106715] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/18/2023] [Accepted: 12/01/2023] [Indexed: 12/22/2023]
Abstract
Hydrodynamic cavitation is useful in many processing applications, for example, in chemical reactors, water treatment and biochemical engineering. An important type of hydrodynamic cavitation that occurs in a Venturi tube is vortex cavitation known to cause luminescence whose intensity is closely related to the size and number of cavitation events. However, the mechanistic origins of bubbles constituting vortex cavitation remains unclear, although it has been concluded that the pressure fields generated by the cavitation collapse strongly depends on the bubble geometry. The common view is that vortex cavitation consists of numerous small spherical bubbles. In the present paper, aspects of vortex cavitation arising in a Venturi tube were visualized using high-speed X-ray imaging at SPring-8 and European XFEL. It was discovered that vortex cavitation in a Venturi tube consisted of angulated rather than spherical bubbles. The tangential velocity of the surface of vortex cavitation was assessed considering the Rankine vortex model.
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Affiliation(s)
- Hitoshi Soyama
- Department of Finemechanics, Tohoku University, 6-6-01 Aramaki, Aoba-ku, Sendai 980-8579, Japan.
| | - Xiaoyu Liang
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, Miyagi 980-8577, Japan
| | - Wataru Yashiro
- Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, Miyagi 980-8577, Japan; International Center for Synchrotron Radiation Innovation Smart (SRIS), Tohoku University, Katahira 2-1-1, Aoba-ku, Sendai, Miyagi 980-8577, Japan; Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kentaro Kajiwara
- Japan Synchrotron Radiation Research Institute, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
| | | | | | | | | | - Chan Kim
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | | | | | - Romain Letrun
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Yuhe Zhang
- Synchrotron Radiation Research and NanoLund, Lund University, Box 118, Lund, 221 00, Sweden
| | - Jozef Uličný
- Faculty of Science, Department of Biophysics, P. J. Šafárik University, Jesenná 5, 04154 Košice, Slovakia
| | - Richard Bean
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Adrian P Mancuso
- Diamond Light Source Ltd, Harwell Science and Innovation Campus, Diamond House, Didcot, OX11 0DE, UK; Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Pablo Villanueva-Perez
- Synchrotron Radiation Research and NanoLund, Lund University, Box 118, Lund, 221 00, Sweden
| | - Tokushi Sato
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany
| | - Patrik Vagovič
- European XFEL GmbH, Holzkoppel 4, 22869 Schenefeld, Germany; Center for Free-Electron Laser (CFEL), DESY, Notkestraße 85, 22607 Hamburg, Germany
| | - Daniel Eakins
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
| | - Alexander M Korsunsky
- Department of Engineering Science, University of Oxford, Parks Road, Oxford OX1 3PJ, UK
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