Numerical simulation of unsteady 3D cavitating flows over axisymmetric cavitators

A three dimensional numerical study of unsteady turbulent cavitating flows around a circulardisk and a cone cavitator. cavitating flows which can occur in a variety of practical cases can be modeledwith a wide range of methods. the rans (reynolds average navier stokes) equations and an additionaltransport equation for liquid volume fraction are solved by using finite volume approach through thesimple algorithm. in this simulation, a truncated rayleigh-plesset equation is applied for bubble dynamic.also specific numerical modifications are used in a finite volume approach to promote robust solutionwhen cavitation is present. moreover, the vof method is adopted to track the interface between the liquidand the vapor phases. for implementation of turbulent flow, the shear stress transport, k ?? ! model isselected. the main characteristics of the cavity are analyzed and compared with experimental data. thepresent results for both cases are in good agreement with experimental data and analytical relations. theseagreements confirm the authority of this simulation to be implemented in more complicated shapes.