model fluid
command
Syntax
- model fluid <b > keyword
-
Set parameters for a fluid flow analysis. This command is only available
model configure fluid-flow
has been specified. The activity can be directly specified by providing b. See the ref:-Fluid-Mechanical Interaction <fluid-mechanical>- section for complete information. :flag3:[cs: commmon]`- active b
The fluid process is on, by default, when the
model configure fluid-flow
command is given. Specify active off to suppress fluid calculations.
- list
Display fluid calculation-mode information.
- time-total f
f is the accumulated fluid time for the model. This can be reset to any value, and will continue to be accumulated during cycling after that.
- follower b
Specify that fluid mode is to be considered a follower, and cycled to equilibrium after each leader step has been taken.
- substep i
Specify the maximum number of steps the fluid process will take when solving with follower on.
- timestep
- automatic
The stable timestep is calculated automatically. This is the default setting.
- fix f
Set the timestep to be the fixed value f. All timestep calculations are skipped. Setting a value greater than the calculated critical timestep will result in an error.
- increment f
Set the incremental amount that the timestep is allowed to increase from one cycle to the next in auto mode. By default, f = 1.05. The timestep can decrease by any amount to ensure stability.
- maximum f
Set the maximum allowed timestep. By default, there is no bound to the maximum timestep.
- safety-factor f
Set the timestep safety factor, or the factor that is multiplied by the stable timestep calculated when auto mode. By default, f = 1.0.
- update i
Set the number of cycles between timestep calculation in 3DEC. By default, i = 1 (i.e., the timestep is updated every cycle). This value is not used in FLAC3D fluid timestep calculations.
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