Engineering Mechanics

International Conference

Proceedings Vol. 9 (2003)


May 11 – 15, 2003, Svratka, Czech Republic
Editors: Jiří Náprstek and Cyril Fischer

Copyright © 2003 Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague

ISBN 80-86246-18-3 (printed, Extended Abstracts)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Bubble nucleation, preliminary cavitation experiments in water and mass transport modelling in the Rayleigh-Plesset equation
Zima P., Maršík F.
pages 408 - +6p., full text

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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