Description

This test is transient, compressible, inviscid flow. The wind tunnel has 1 length unit wide and 3 length units long. The step is 0.2 length units high and is located 0.6 length units from the left-hand end of the tunnel. The tunnel is assumed to have an infinite width in the direction orthogonal to the plane of the computation (i.e., “slab symmetry” is assumed). So, we treat it as a two-dimensional problem. Initially the wind tunnel is filled with a gamma-law gas, with ϒ = 1.4, which everywhere has density 1.4, pressure 1.0, and velocity 3. Gas with this density, pressure, and velocity is continually fed in from the left-hand boundary. 

References: 

[1] “ANSY Fluid Dynamics verification Manual”, 2019 R3 

[2] Woodward, P., Colella, P., "The Numerical Simulation of Two-Dimensional Fluid Flow with Strong Shocks", Journal of Computational Physics, Vol 54, pp. 115-173, 1984