Comparative investigation among three cavitation models for simulating cavitating venturi

Numerical models based on the mixture multiphase model and three different cavitation models (Singhal model, Zwart-Gerber-Belamri model, and Schnerr and Sauer model) were investigated to simulate cavitating venturi with different throttle distances. Meanwhile, the adaptability of each of three models was discussed in terms of accuracy and efficiency. Results show that the three numerical models are suitable for simulating the cavitating venturi. In addition, calculated results agree with test data and the relative error decreases with increasing throttle distance. Compared with the other two cavitation models, the Zwart-Gerber-Belamri model relatively has higher precision, consumes less running time, and indicates the temperature distribution in the flow field; thus ZGB model is best for simulating cavitating venturi.