Evaluation of filter-based model for numerical computation of cryogenic turbulent cavitating flows

The application of filter-based turbulent model in the computation of the cryogenic turbulent cavitating flows was evaluated. The standard k-ε, modified RNG k-ε and FBM turbulence models were used to simulate the cavitating flows around an axisymmetric ogive in liquid nitrogen and investigate the influence of the inlet turbulent intensity on the cavitating flows. By comparing the numerical results with the experimental data in a reference, it is shown that the FBM turbulence model can be used to simulate the cavity interface of the vapour-liquid mixture in the cryogenic fluids so much the better, and capture the pressure and temperature distributions around the axisymmetric ogive more accurately. The simulation results obtained by the FBM model are accordant with the experimental data. The standard k-ε and modified RNG k-ε models are more sensitive to the inlet eddy-to-laminar viscosity ratio of the calculation cases. The FBM model can be used obviously to reduce the effect of the inlet boundary conditions of μ _T/μ _L| _inlet viscosity ratio on the numerical results.