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The problem begins with uniform Mach
3 flow in a wind tunnel containing a step. The wind tunnel is 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). At the left is a flow-in boundary condition, and at the right
all gradients are assumed to vanish. The exit boundary condition has
no effect on the flow, because the exit velocity is always supersonic.
Initially the wind tunnel is filled with a gamma-law gas, with gamma=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.
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"GFM"
Boundary Conditions Capturing:
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This page was last updated June 14, 2001. Please direct questions or comments to robert@crss.ucsb.edu.