WIND User's Guide - Keyword Reference, GRID LIMITER

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GRID LIMITER - Grid limiting capability

GRID LIMITER {ANGLE angle | OFF} [zone_selector]

WIND's grid limiting capability switches the explicit operator to a first-order scheme in the presence of grid turning greater than a specified amount. This capability may be needed to reduce numerical instabilities near wing tips, leading edges, and other geometric features which may require extreme amounts of grid turning.

The parameter angle is the number of degrees off of a straight line allowed before limiting the scheme to first order.

See Also: TEST 110, TVD