I am solving a highly pressured gas-water flow. In some physical situations, water is cavitated. Can anyone advice me how to simulate this physical event? The fluid flow is compressible and inviscid.

What causes cavitation to be excited? Answer this question and you will know what to look for. Good Luck

Thanks for your reply. Water is cavitated when the pressure is lower than a vapor pressure. Experiments usually provide it as zero. Physically, it implies that water cannot sustain tension. Unlike solids, it is cavitated when subjected to a strong expansion wave.

To do, I implemented in the way that when the pressure is lower than zero, the calculated pressure becomes zero instead of any negative pressure. Thanks.

Actually there're lots of cavitation models, but they can be difficult to implement if you don't have them in the code already. I don't have many references at hand now, just what I've found in Star-CD manual:

Schmidt, D.P., Rutland, C.J., and Corradini, M.L. 1997. 'A numerical study of cavitating flow through various nozzle shapes', SAE Technical Paper Series 971597, pp. 117-126.

Kubota, A., Kato, H., and Yamaguchi, H. 1992. 'A new modelling of cavitating flows: a numerical study of unsteady cavitation on a hydrofoil section', J. Fluid. Mech., 240, pp. 59-96.

The first one is for barotropic model, the second - for bubble two-phase model.