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

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STAGES - Multi-stage time stepping

Structured Grids

STAGES ityp [COEFFICIENTS x1 x2 ... xn] [zone_selector]

For structured grids, this keyword allows the user to use a Runge-Kutta time stepping option. The parameter ityp specifies the number of stages, and x1 x2 ... xn specify the coefficients. The following ityp values are available:

	ityp		Stages
	0		One stage, Euler implicit or explicit
	1		Four stage, Jameson type
	5		Three stage, minimal storage, third-order
	7		Two stage, second-order

The default coefficients are:

ityp	# Req'd	Defaults
0	-	-
1	4	1/4, 1/3, 1/2, 1
5	5	1/4, 8/15, 0, 5/12, 3/4
7	2	1/2, 1

Last updated 1 Apr 2016