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Physically Realistic Models of Catastrophic Bubble Collapses

Storey, Brian D. and Lin, Hao and Szeri, Andrew J. (2001) Physically Realistic Models of Catastrophic Bubble Collapses. In: CAV 2001: Fourth International Symposium on Cavitation, June 20-23, 2001, California Institute of Technology, Pasadena, CA USA. (Unpublished) http://resolver.caltech.edu/CAV2001:sessionB6.001

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Abstract

When gas micro-bubbles are forced with an acoustic field they typically undergo a slow expansion followed by a violent collapse. During the expansion phase a significant amount of vapor enters the bubble. While much of this vapor is expelled as the bubble collapses, significant excess vapor is trapped in the interior during this violent collapse. As the bubble collapses this vapor is significantly heated and undergoes dissociative chemical reactions. Applications which take advantage of these acoustically driven chemical reactions are generally known as sonochemistry. Using the results of direct numerical simulations as a base, reduced models of the transport and gas dynamics of this sonochemical process are carefully developed. The models are compared to experimental data, showing that the reduced formulations can be used to predict real phenomena.


Item Type:Conference or Workshop Item (Lecture)
Subject Keywords:bubble dynamics, sonochemistry
Record Number:CAV2001:sessionB6.001
Persistent URL:http://resolver.caltech.edu/CAV2001:sessionB6.001
Usage Policy:The papers of this symposium proceedings are protected by copyright, retained by the authors. Authors control translation and reproduction rights to these works. However, readers are granted permission for individual, educational, research and non-commercial reproduction, distribution, display and performance of this work in any format. This permission is in addition to rights of reproduction granted under Section 107, 108, and other provisions of the U.S. Copyright Act.
ID Code:32
Collection:CaltechCONF
Deposited By: Imported from CAV2001
Deposited On:28 Mar 2001
Last Modified:26 Dec 2012 07:09

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