Numerical simulation of cavitation flows based on their hydrodynamic similarity

被引：24

作者：

School of Engineering, University of Brighton, Brighton, United Kingdom ^{[1
]}

不详 ^{[2
]}

机构：

[1] School of Engineering, University of Brighton, Brighton

[2] Engineering Research Centre, University of Brighton, Cockcroft Building, Moulsecoomb

来源：

Int. J. Engine Res. | 2006年 / 3卷 / 283-296期

关键词：

Bubbles; Cavitation; Liquid tension; Modelling; Scaling; Similarity;

D O I：

10.1243/14680874JER04105

中图分类号：

学科分类号：

摘要：

Hydrodynamic similarity of cavitation flows in nozzles of different scales has been observed experimentally. In this paper a model of cavitation has been developed, taking into account the bubbly nature of cavitation and assuming local homogeneity of the vapour-liquid flow. The model of cavitation is built from correlations for evaporation and condensation, based on bubble dynamics theory, and an equation for the number density of cavitation bubbles, derived by assuming hydrodynamic similarity of cavitation flows. Compared with conventional models of cavitation, which fix the number density of cavitation bubbles, the present model takes into account the effect of liquid tension on the number density of active cavitation nuclei. The model has been implemented within the VECTIS computational fluid dynamics code and applied to the simulation of cavitating flows in nozzles. © IMechE 2006.

引用

页码：283 / 296

页数：13

共 37 条

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