Simulation of Two Benchmark Cases: 2DB and 2DML from Turbulence Modeling Resource using STAR-CCM+ and OpenFOAM

In the current paper, results of a validation study for two CFD solvers conducted using two benchmark cases: VERIF/2DB and 2DML, available at the Turbulence Modeling Resource (TMR) website (https://turbmodels.larc.nasa.gov/), are presented. The tested solvers are the commercial software STAR-CCM+ and the open-source code OpenFOAM. In the simulations with STAR-CCM+, the standard solver versions of SA and SST turbulence models are used with the model coefficients modified to match those in TMR. In OpenFOAM, the SA turbulence model and two versions of the SST turbulence model: SSTm and SST-2003m, are implemented following the models’ description in TMR. In the paper, the simulation results from the two solvers are compared against the simulation results obtained with the NASA high-fidelity codes CFL3D and FUN3D. Experimental data and data from simulations with other solvers are also used for comparison where available. In the 2DB case, the finest grid is recommended for simulations with OpenFOAM and Star-CCM+ for their results to agree with those from the NASA codes. Even on the finest grid, solutions from STAR-CCM+ deviate from those of other codes near the domain boundaries. Both STAR-CCM+ and OpenFOAM tend to overpredict the maximum value of the eddy viscosity. OpenFOAM results are in close agreement with the NASA results when the SSTm turbulence is used in the 2DB case. For the 2DML case, the results from both solvers are in a good agreement with the CFL3D results with small differences observed in the velocity and shear stress profiles in the flow area closer to the splitter plate trailing edge. Numerical results obtained with the SA model implemented in the considered solvers are in a better agreement with experimental data than those obtained with the SST models for this case.