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# Parameter definitions for thorn Time
shares: cactus
USES REAL cctk_final_time
USES KEYWORD terminate
restricted:
KEYWORD timestep_method "Method for calculating timestep"
{
"given" :: "Use given timestep"
"courant_static" :: "Courant condition at BASEGRID (using dtfac)"
"courant_speed" :: "Courant condition at POSTSTEP (using wavespeed and courant_fac)"
"courant_time" :: "Courant condition at POSTSTEP (using min time and courant_fac)"
} "courant_static"
BOOLEAN timestep_outonly "Don't set a dynamic timestep, just output what it would be"
{
} "no"
private:
REAL timestep "Absolute value for timestep"
{
*:* :: "Could be anything"
} 0.0
REAL dtfac "The standard timestep condition dt = dtfac*max(delta_space)"
{
0:* :: "For positive timestep"
*:0 :: "For negative timestep"
} 0.5
REAL courant_fac "The courant timestep condition dt = courant_fac*max(delta_space)/speed/sqrt(dim)"
{
0:* :: "For positive timestep"
*:0 :: "For negative timestep"
} 0.9
INT timestep_outevery "How often to output courant timestep"
{
1:* :: "Zero means no output"
} 1
BOOLEAN verbose "Give selective information about timestep setting"
{
} "no"
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