mirror of
https://github.com/ParticulateFlow/CFDEMcoupling-PFM.git
synced 2025-12-08 06:37:44 +00:00
82 lines
2.8 KiB
Plaintext
82 lines
2.8 KiB
Plaintext
"CFDEMproject Website"_lws - "Main Page"_main :c
|
|
|
|
:link(lws,http://www.cfdem.com)
|
|
:link(main,CFDEMcoupling_Manual.html)
|
|
|
|
:line
|
|
|
|
forceSubModel command :h3
|
|
|
|
[Syntax:]
|
|
|
|
Defined in "couplingProperties"_CFDEMcoupling_dicts.html#couplingProperties
|
|
sub-dictionary of the force model in use. If no force sub-model is applied, ImEx
|
|
is used as default. If the keyword "forceSubModels" is provided, a choice of
|
|
sub-model is demanded.
|
|
|
|
forceSubModels
|
|
(
|
|
model_x
|
|
model_y
|
|
); :pre
|
|
|
|
model = name of force sub-model to be applied :ul
|
|
|
|
[Examples:]
|
|
|
|
forceSubModels
|
|
(
|
|
ImEx
|
|
); :pre
|
|
|
|
NOTE: This examples list might not be complete - please look for other models
|
|
(forceSubModel XY) in this documentation.
|
|
|
|
[Description:]
|
|
|
|
The force sub model is designed to hold the settings a force model can have.
|
|
Depending on the availability within the respective force model, the following
|
|
options are handled:
|
|
|
|
{treatForceExplicit} - switch for the purely explicit consideration of the force
|
|
term in the equation of motion on the CFD side (off -> the force is considered
|
|
semi-implicitly; default off) :ulb,l
|
|
{treatForceDEM} - switch for the consideration of the forces on the DEM side only
|
|
(off -> calculate forces for DEM and CFD; default off) :l
|
|
{implForceDEM} - If true, the fluid velocity and drag coefficient are communicated
|
|
to the DEM calculation at each coupling time step and the drag force is
|
|
calculated at each DEM time step, using the current particle velocity.
|
|
If false, a force term is communiated to the DEM calculation at each coupling
|
|
time step, the term is constant for one coupling interval.
|
|
(on -> DEM forces are updated every DEM step; default off) :l
|
|
{verbose} - switch for debug output to screen (on -> enable debug output; default
|
|
off) :l
|
|
{interpolation} - switch for the usage of interpolation models when getting data
|
|
for the Lagrangian calculation from Eulerian fields;
|
|
f false, the cell centre values are used. (default off) :l
|
|
{useFilteredDragModel} - switch for using a coarse-grid version of the Beetstra
|
|
drag model (takes grid-size effects into account; default = off) :l
|
|
{useParcelSizeDependentFilteredDrag} - switch for using a coarse-grid version of
|
|
the Beetstra drag model (takes parcel-size effects into account, will force the
|
|
switch useFilteredDragModel to "on"; default = off) :l
|
|
{implForceDEMaccumulated} - Can only be used in combination with implForceDEM
|
|
switch, drag force values of each DEM time step are accumulated and passed on to
|
|
the CFD-calculation. (default off) :l
|
|
{scalarViscosity} - switch for the usage of a user-defined viscosity nu for the
|
|
calculation of the drag force; The CFD calculation always uses the value of the
|
|
transport model. (off -> use tranportProperties nu; default off) :l
|
|
:ule
|
|
|
|
[Restrictions:]
|
|
|
|
none
|
|
|
|
[Related commands:]
|
|
|
|
"ImEx"_forceSubModel_ImEx.html
|
|
|
|
[Default:]
|
|
|
|
none
|
|
|