Wind-US User's Guide - Keyword Reference, IMPLICIT BOUNDARY

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IMPLICIT BOUNDARY - Implicit boundary conditions

IMPLICIT BOUNDARY {OFF | ON | NOCOUPLE} [zone_selector]

This keyword controls the use of numerical boundary conditions within the implicit operator. The types of boundaries treated implicitly depend upon the mode selected.

	Mode		Implicit Boundaries
	`OFF`		None
	`ON`		Reflection Walls (viscous or inviscid, with or without bleed, blowing, etc.) Frozen [unstructured zones only] Outflow [unstructured zones only] Coupled [unstructured zones only]
	`NOCOUPLE`		Same as `ON`, minus Coupled boundaries

The default mode for structured grids is OFF, implying explicit boundary conditions.

The default mode for unstructured grids is ON if the code is run with one zone per processor, otherwise it is NOCOUPLE. Usually the only reason to use NOCOUPLE is if the computer hardware is unable to handle the additional communication needed with implicit coupling.

Implicit boundary conditions cannot be used if the IMPLICIT OVERFLOW keyword is specified.

See Also: IMPLICIT, DEBUG 38

Last updated 1 Apr 2016