Wind-US User's Guide - Keyword Reference, CONVERGE

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CONVERGE - Controls convergence

CONVERGE {LEVEL | ORDER} val

This keyword allows the user to specify the criterion used to automatically stop a run when it converges.

Note that this keyword should not be used as the sole method for determining convergence. Convergence should be monitored throughout a run by tracking residuals, integrated forces, moments, and mass flow, and/or flow variables at particular locations. See the Convergence Monitoring section for more detail.

The options available are:

	`LEVEL`		Check for maximum residual less than val.
	`ORDER`		Check for reducing maximum residual by val orders of magnitude.

When the specified convergence level has been reached for all zones, the calculation will stop. The default, when the CONVERGE keyword isn't used, is a four order of magnitude decrease in the maximum residual.

If Newton iteration or dual time stepping is being used, this keyword specifies the convergence criterion within the inner time step loop. The overall global convergence criterion is specified using the TEMPORAL...CONVERGENCE keyword combination.

See Also: LOADS, HISTORY, TEMPORAL, TEST 128

Last updated 1 Apr 2016