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Axisymmetric Impinging Shock Boundary-Layer Interaction Validation Case

SST-Vm Model Results

Link to SST-Vm equations
SST-Vm - incoming axial velocity SST-Vm - incoming eddy viscosity
SST-Vm - surface pressure coefficient SST-Vm - surface skin friction coefficient
SST-Vm - u velocites SST-Vm - downstream u velocities

The plots compare the SST-Vm results from FUN3D, Wind-US, and VULCAN-CFD with experimental data.

Slightly different boundary conditions were used for different codes:

For Wind-US, μ_t = 0.001 μ_lam at the inflow, or μ_t = 1.89e-8 kg/(m*s). Next, ω at the inflow is set according to ω = 10 U/L_ref. Then k = ω * μ_t. This resulted in a turbulent kinetic energy of k = 5.15e-3 m²/s².
For FUN3D, μ_t = 6.36e-7 kg/(m*s). The turbulent kinetic energy was k = 4.98e-4 m²/s².
For VULCAN-CFD, μ_t = 9.44e-9 kg/(m*s). The turbulent kinetic energy was k = 6.81e-3 m²/s².

Please read note 5 on Notes on running CFD page as well as the page on Defining Boundary Conditions. These results are from the finest grid (161x361; 81x361; 161x361; 217x361; 321x321; 721x321) and all codes yield nearly identical results.

The data files from all three codes are given here:

A typical FUN3D input file is: fun3d.nml.

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Page Curators: Clark Pederson, Prahladh Iyer, Ethan Vogel
Last Updated: 07/30/2026