Group Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Title: 2.1.3 - Radial Motion of a Spherical Cavitation Bubble in Varying Pressure Fields
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Permanent Link: http://ufdc.ufl.edu/UF00102023/00040
 Material Information
Title: 2.1.3 - Radial Motion of a Spherical Cavitation Bubble in Varying Pressure Fields Cavitation
Series Title: 7th International Conference on Multiphase Flow - ICMF 2010 Proceedings
Physical Description: Conference Papers
Creator: Kawashima, H.
Kumazawa, Y.
Kameda, M.
Publisher: International Conference on Multiphase Flow (ICMF)
Publication Date: June 4, 2010
 Subjects
Subject: bubble
cavitation
phase change
heat and mass transfer
high-speed photography
 Notes
Abstract: The motion of a single gas/vapor bubble due to sudden pressure reduction was analyzed experimentally and numerically. A shock-tube was used to generate the pressure reduction on the bubble.. The bubble motion and the surrounding pressure were recorded with a high-speed video camera and a pressure transducer, respectively. In order to clarify the effect of evaporation at the bubble wall, we applied two different pressure changes on the bubble: one was that the minimum pressure level was just above the saturated vapor pressure pv,s ; the other was just below pv,s. The experimental data was compared with the numerical results based on our mathematical model (Kawashima and Kameda, J. Fluid Sci, Tech. 3(2008), 943), in which the heat and mass transports including the phase change at the bubble wall accurately described. The results indicated that the temperature reduction due to evaporation substantially reduced the expansion rate of the bubble under the pressure reduction, even if the surrounding liquid had room temperature. The radial motion after the first rebound motion was different from the numerical prediction by our model. This implied that the non-spherical motion affected the mass transport across the bubble wall.
General Note: The International Conference on Multiphase Flow (ICMF) first was held in Tsukuba, Japan in 1991 and the second ICMF took place in Kyoto, Japan in 1995. During this conference, it was decided to establish an International Governing Board which oversees the major aspects of the conference and makes decisions about future conference locations. Due to the great importance of the field, it was furthermore decided to hold the conference every three years successively in Asia including Australia, Europe including Africa, Russia and the Near East and America. Hence, ICMF 1998 was held in Lyon, France, ICMF 2001 in New Orleans, USA, ICMF 2004 in Yokohama, Japan, and ICMF 2007 in Leipzig, Germany. ICMF-2010 is devoted to all aspects of Multiphase Flow. Researchers from all over the world gathered in order to introduce their recent advances in the field and thereby promote the exchange of new ideas, results and techniques. The conference is a key event in Multiphase Flow and supports the advancement of science in this very important field. The major research topics relevant for the conference are as follows: Bio-Fluid Dynamics; Boiling; Bubbly Flows; Cavitation; Colloidal and Suspension Dynamics; Collision, Agglomeration and Breakup; Computational Techniques for Multiphase Flows; Droplet Flows; Environmental and Geophysical Flows; Experimental Methods for Multiphase Flows; Fluidized and Circulating Fluidized Beds; Fluid Structure Interactions; Granular Media; Industrial Applications; Instabilities; Interfacial Flows; Micro and Nano-Scale Multiphase Flows; Microgravity in Two-Phase Flow; Multiphase Flows with Heat and Mass Transfer; Non-Newtonian Multiphase Flows; Particle-Laden Flows; Particle, Bubble and Drop Dynamics; Reactive Multiphase Flows
 Record Information
Bibliographic ID: UF00102023
Volume ID: VID00040
Source Institution: University of Florida
Holding Location: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: 213-Kawashima-ICMF2010001.pdf

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