Wind-US User's Guide - Keyword Reference, OUTFLOW NON-REFLECTING

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OUTFLOW NON-REFLECTING - Outflow boundaries, non-reflecting

Structured Grids

OUTFLOW [NON-REFLECTING] zone_selector

This keyword imposes a non-reflecting, subsonic outflow boundary condition at outflow boundaries in structured zones. Acoustic disturbances reaching the boundary are essentially eliminated. It is actually implemented using the Paynter compressor face model, but with the response coefficients alpha and beta set to zero [Slater, J. W. and Paynter, G. C. (2000) "Implementation of a Compressor Face Boundary Condition Based on Small Disturbances", ASME Paper 2000-GT-0005].

Specification of the zone_selector is required for this keyword.

This boundary condition is intended to be used for time-accurate flows with a CFL number less than one; however, it may be applicable in certain cases for steady-state simulations.

See Also: COMPRESSOR FACE PAYNTER, TEST 123

Last updated 1 Apr 2016