"CFDEMproject Website"_lws - "Main Page"_main :c

:link(lws,http://www.cfdem.com)
:link(main,CFDEMcoupling_Manual.html)

:line

forceModel DiFeliceDrag command :h3

[Syntax:]

Defined in "couplingProperties"_CFDEMcoupling_dicts.html#couplingProperties
dictionary.

forceModels
(
    DiFeliceDrag
);
DiFeliceDragProps
\{
    velFieldName          "U";
    voidfractionFieldName "voidfraction";
    granVelFieldName      "Us";
    scale                 scalar1;
    scaleDrag             scalar2;
    treatForceExplicit    switch1;
    implForceDEM          switch2;
    verbose               switch3;
    interpolation         switch4;
    scalarViscosity       switch5;
\} :pre

{U} = name of the finite volume fluid velocity field :ulb,l
{voidfraction} = name of the finite volume void fraction field :l
{Us} = name of the finite volume granular velocity field :l
{scalar1} = (optional) scaling of particle diameter: d_sim=scale*d_real. d_sim=(potentially coarse-grained) particle diameter.
scale=coarse-graining factor. d_real= particle diameter as it is measured. :l
{scalar2} = (optional) scaling factor which directly scales the drag force. :l
{switch1} = (optional, default false) sub model switch, see "forceSubModel"_forceSubModel.html for details :l
{switch2} = (optional, default false) sub model switch, see "forceSubModel"_forceSubModel.html for details :l
{switch3} = (optional, default false) sub model switch, see "forceSubModel"_forceSubModel.html for details :l
{switch4} = (optional, default false) flag to use interpolated void fraction and velocity values :l
{switch5} = (optional, default false) sub model switch, see "forceSubModel"_forceSubModel.html for details :l
:ule

[Examples:]

forceModels
(
    DiFeliceDrag
);
DiFeliceDragProps
\{
    velFieldName  "U";
    interpolation true;
\} :pre

[Description:]

The force model performs the calculation of forces (e.g. fluid-particle
interaction forces) acting on each DEM particle. The {DiFeliceDrag} model is a
model that calculates the particle based drag force following the correlation of
Di Felice (see Zhou et al. (2010), JFM).

[Restrictions:]

none

[Related commands:]

"forceModel"_forceModel.html