Water flow through a narrow duct (throttle) is simulated in 2D using OpenFOAM's cavitatingFoam solver. cavitatingFoam is a transient solver based on the homogeneous equilibrium model from which the compressibility of the liquid/vapour ”mixture” is obtained. Turbulence is modeled with SST model. Flow induction is based on pressure difference between two chambers. OpenFOAM simulation files are also attached.
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