Bubble nucleation, preliminary cavitation experiments in water and mass transport modelling in the Rayleigh-Plesset equation

Abstract eng:
The paper presents theoretical and preliminary experimental results attempting to validate the modified nucleation theory for mixtures (published by Maršík et al. (2002)) for the case of cavitation. The non-equilibrium (dissipative) processes involved in the origination of a nucleus are expressed using an experimentally obtained coefficient. The value of the coefficient is estimated from the cavitation experiment in a convergent-divergent nozzle. It is assumed that the energy of thermodynamic fluctuations near the breaking tension is comparable to the minimum work of formation of a bubble. In addition, the effect of mass transport across the bubble wall is discussed in numerical experiments using the previously published modified Rayleigh-Plesset equation.

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