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A numerical model for the evolution of internal structure of cavitation cloud

Date:2017-03-20Du TezhuanSource:

Bubble size distributions in cloud cavitation are important in cavitating flows. In this study, a numerical model was developed to study the evolution of the internal structure of cloud cavitation. The model includes (1) an evolution equation of bubble number density, which considers the bubble breakup effect and (2) the multiphase Reynolds-averaged Navier-Stokes equations with a modified cavitation model for background cavitating flows. The proposed model was validated with a flow over a projectile. Results show that the numerical model can predict the evolution of the internal structure of cloud cavitation. Comparisons of the proposed model and Singhal model were discussed. The effects of re-entrant jet and bubble number density on cavitating flows were also investigated. Published by AIP Publishing.

 

http://dx.doi.org/10.1016/j.ijheatmasstransfer.2016.10.042

 

This research was sponsored by National Natural Science Foundation of China under Contract No. 11402276 (Tezhuan Du, Program Manager).