Comparison of Mass Transfer Models and Proper Model Selection in Anticipation of Cavitation for Internal Flows

Influences of three prevalent mass transfer models, on modeling of cavitation, are investigated numerically. Two models of Singal and Zwart are implemented in an open source code, Open FOAM, while the Kunz model is available for cavitation modeling. Each model is used to flow simulation through a venturi. Volume of gas fraction, in the specified sections of conduit, is compared to experimental data. High precision numerical results are obtained in compare with experimental data using Kunz, Singhal and Zwart models, which they demonstrate less than 5 percent in relative errors. Kunz, zwart and singhal models, results in 2.93%, 3.71%, 4.01% relative errors respectively, in average. Although, there is not a significant advantage between the averaged results of Kunz and Zwart models, Zwart model represents more precious results in initial position of cavitation appearance, where the Singhal model shows the accurate results too.