add tcoll_ratio description (b7a992d7) · Commits · William D. Fullmer / docs

docs/source/InputsTimeStepping.rst

+3 −1

Original line number	Diff line number	Diff line
		@@ -24,11 +24,13 @@ The following inputs must be preceded by "mfix."
		+======================+=======================================================================+=============+==============+
		\| fixed_dt \| Should we use a fixed timestep? \| Int \| 0 \|
		+----------------------+-----------------------------------------------------------------------+-------------+--------------+
		\| cfl \| CFL constraint (dt < cfl * dx / u) if fixed_dt not 1 \| Real \| 0.5 \|
		+----------------------+-----------------------------------------------------------------------+-------------+--------------+
		\| dt_min \| Abort if dt gets smaller than this value \| Real \| 1.e-6 \|
		+----------------------+-----------------------------------------------------------------------+-------------+--------------+
		\| dt_max \| Maximum value of dt if calculating with cfl \| Real \| 1.e14 \|
		+----------------------+-----------------------------------------------------------------------+-------------+--------------+
		\| cfl \| CFL constraint (dt < cfl * dx / u) if fixed_dt not 1 \| Real \| 0.5 \|
		\| tcoll_ratio \| DEM timestep equals the min collision time divided by this value \| Real \| 50.0 \|
		+----------------------+-----------------------------------------------------------------------+-------------+--------------+

		The following inputs must be preceded by "mfix" and are only relevant if running a problem to steady state.