WIND User's Guide - Keyword Reference, STAGES

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STAGES - Multi-stage time stepping

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

This keyword allows the user to control the 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

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

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

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