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-rw-r--r--param.ccl10
1 files changed, 6 insertions, 4 deletions
diff --git a/param.ccl b/param.ccl
index 30fa3ff..3776b46 100644
--- a/param.ccl
+++ b/param.ccl
@@ -5,10 +5,10 @@ restricted:
KEYWORD timestep_method "Method for calculating timestep"
{
- "given" :: "Use given timestep"
+ "given" :: "Use given timestep"
"courant_static" :: "Courant condition at BASEGRID"
"courant_speed" :: "Courant condition at PRESTEP (using wavespeed)"
- "courant_time" :: "Courant condition at PRESTEP (using min time)"
+ "courant_time" :: "Courant condition at PRESTEP (using min time)"
} "courant_static"
BOOLEAN timestep_outonly "Don't set a dynamic timestep, just output what it would be"
@@ -24,12 +24,14 @@ REAL timestep "Absolute value for timestep"
REAL dtfac "The standard timestep condition dt = dtfac*max(delta_space)"
{
- 0:* :: "Probably only makes sense to be bigger than zero"
+ 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:* :: "Probably only makes sense to be bigger than zero"
+ 0:* :: "For positive timestep"
+ *:0 :: "For negative timestep"
} 0.9
INT outtimestep_every "How often to output courant timestep"