Abstract

A new model of bubble dynamics in acoustic field is constructed, including effect ofheat transfer at bubble wall. The temperature inside the bubble is calculated by solving theenergy equation of the gas inside the bubble (using finite difference method). The liquidtemperature at bubble wall is numerically calculated by assuming an exponential profile ofliquid temperature. It is including effect of thermal conduction at bubble wall. Calculationsare performed for adiabatic model.The results reveal that the effect of heat transfer is considerable on bubble dynamics.The calculated results fit with the experimental data of radius-time curve much moresatisfactorily than those by the adiabatic model (without heat transfer). It is clarified that theeffect of heat transfer stabilizes bubble oscillations.

The article was added to IASJ on 2012-08-27

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