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Predictions of Temperature and Pressure Fields due to Collapse of a Bubble in Sulfuric Acid Solution Under Ultrasound

[+] Author Affiliations
Ali Alhelfi, Bengt Sunden

Lund University, Lund, Sweden

Paper No. IMECE2014-37595, pp. V08BT10A020; 9 pages
  • ASME 2014 International Mechanical Engineering Congress and Exposition
  • Volume 8B: Heat Transfer and Thermal Engineering
  • Montreal, Quebec, Canada, November 14–20, 2014
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4956-9
  • Copyright © 2014 by ASME


A gas bubble under the influence of an ultrasonic field so strong to destroy any material due to high pressures and temperatures reached during the collapse, is the topic of the present paper. In the current work, simulations have been performed to describe the radial dynamics of a gas (argon) bubble being strongly forced to periodic oscillation in a highly viscous liquid like aqueous sulfuric acid solution. The basic equations for nonlinear bubble oscillation in a sound field are given, together with a survey of some important existing studies. All hydrodynamics forces acting on the bubble are considered in the typical solutions. Bubble oscillation and its characteristics under the action of a sound wave are presented. The theory permits one to predict correctly the bubble radius–time behavior and the characteristics of a microsize bubble in sulfuric acid solutions, such as the peak temperature and pressure fields generated at this occasion.

Copyright © 2014 by ASME



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