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MARCHING - Parabolized Navier-Stokes algorithm

Structured Grids


For structured grids, this keyword enables Wind-US's spatial marching, or parabolized Navier-Stokes (PNS), algorithm for flowfields which are supersonic in the computational i-direction. In this mode, Wind-US marches from the i = 1 to the i = imax computational surface, attempting to compute a steady-state solution at each plane before moving on to the next one. Using the PNS algorithm significantly reduces the computing time required for supersonic solutions.

    LIMITER value   This keyword enables the marching limiter, which limits the change in the solution vector Q to (value)Q. I.e.,

ΔQ ≤ (value)Q

CHECKPOINT interval The parameter interval specifies the number of i-planes to be computed before writing the current flowfield to the solution file. The default is 10.

COPY This keyword requests that Wind-US copy the solution from the most recently computed i-plane to the upcoming i-plane, giving a (hopefully) better initialization to the new i-plane than simply starting from freestream flow.


See Also: RHS

Last updated 12 May 2012