Analysis of simulation results for cavitating flows in micro-channels using different turbulence models

doi:10.7523/j.issn.2095-6134.2016.02.010

Abstract

Abstract:

The cavitation flows in micro-channels were numerically investigated using four different turbulence models, and the models are as follows: standard k-ε turbulence model, standard k-ω turbulence model, Transition SST turbulence model, and Transition k-kl-ω turbulence model. In comparison to the experimental results, the prediction abilities of these turbulence models for the cavitation flow were analyzed in details. The results show that both the flow rate and flow pattern predicted by the standard k-ε turbulence model agree well with the experimental results. Although the flow rates predicted by the Transition SST turbulence model and the Transition k-kl-ω turbulence model also agree well with the experimental results, the predicted flow patterns significantly deviate from the experimental ones. The standard k-ε turbulence model failed to predict the cavitation flow, which indicates that it is not suitable for the low Reynolds number flow circumstance.

Key words: hydrodynamic cavitation, micro-channel, turbulence model, numerical simulation

CLC Number:

TK121

CUI Zhendong, LIU Bin, CAI Jun, HUAI Xiulan. Analysis of simulation results for cavitating flows in micro-channels using different turbulence models[J]. , 2016, 33(2): 213-217.

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