Abstract

A computer study of a pulsating bubble which contains either ideal gas or vapour is presented here. The paper presents a study of pulsating bubbles in an isolated liquid. The effect of heat transfer across the bubble's free surface is included in the calculations. For a bubble containing ideal gas, the equations of state developed by Prospered! et al. (1988) are adopted. For the case of a bubble containing water vapour, an energy equation is used to model the processes of vaporisation and condensation of vapour in the bubble.<br><br> The transient heat flow in the liquid domain is modelled by a Dual Reciprocity Boundary Element technique.<br><br> The results compare the rebound of an ideal gas bubble and a pure water vapour bubble. Some aspects of the modes of heat transfer across the bubble-liquid interface and the consequence of irreversibility are presented.

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