cs_time_step_options_t Struct Reference

time step options descriptor More...

#include <cs_time_step.h>

Collaboration diagram for cs_time_step_options_t:

Data Fields
int	inpdt0
int	iptlro
int	idtvar
double	dtref
double	coumax
double	cflmmx
double	foumax
double	varrdt
double	dtmin
double	dtmax
double	relxst

Detailed Description

time step options descriptor

Members of this time step options descriptor are publicly accessible, to allow for concise syntax.

Field Documentation

cflmmx

Max. Courant number for the continuity equation in compressible model.

coumax

Maximum Courant number (when idtvar is different from 0).

dtmax

Maximum value of dt (when idtvar is different from 0). Take dtmax = max (ld/ud, sqrt(lt/(gdelta rho/rho)), ...).

dtmin

Minimum value of dt (when idtvar is different from 0). Take dtmin = min (ld/ud, sqrt(lt/(gdelta rho/rho)), ...).

dtref

Reference time step.

foumax

Maximum Fourier number (when idtvar is different from 0).

idtvar

Option for a variable time step

• -1: steady algorithm
• 0: constant time step
• 1: time step constant in space but variable in time
• 2: variable time step in space and in time.

inpdt0

Indicator "zero time step"

• 0: standard calculation
• 1: to simulate no time step
• for non-restarted computations: only resolution (Navier-Stokes, turbulence, scalars) is skipped
• for restarted computations: resolution, computation of physical properties, and definition of boundary conditions is skipped (values are read from checkpoint file).

iptlro

Clip the time step with respect to the buoyant effects

• 0: false
• 1: true.

relxst

Relaxation coefficient for the steady algorithm.

varrdt

Allowed relative variation of dt (when idtvar different from 0).

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The documentation for this struct was generated from the following files:

• src/base/cs_time_step.h
• src/base/cs_time_step.c