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

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

:line

forceModel virtualMassForce command :h3

[Syntax:]

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

forceModels
(
    virtualMassForce
);
virtualMassForceProps
\{
    velFieldName "U";
    voidfractionFieldName "voidfraction";
    UsFieldName "Us";
    phiFieldName "phi";
    splitUrelCalculation switch1;
    useUs switch2;
    useFelderhof switch3;
    Cadd scalar1;
    treatForceExplicit switch4;
    interpolation switch5;
    smoothingModel "smoothingModel";
\} :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 cell averaged particle velocity field :l
{phi} = name of the finite volume flux field :l
{switch1} = (optional, default false) indicator to split calculation of Urel between CFDEM and LIGGGHTS :l
{switch2} = (optional, default false) indicator to use the cell-averaged particle velocity Us for calculation of Urel :l
{switch3} = (optional, default false) indicator to use the correlation by Felderhof for the virtual mass coefficient :l
{scalar1} = (optional, default 0.5) virtual mass coefficient :l
{switch4} = (optional, default true) sub model switch, see "forceSubModel"_forceSubModel.html for details :l
{switch5} = (optional, default false) sub model switch, see "forceSubModel"_forceSubModel.html for details :l
{smoothingModel} = name of smoothing model for the DU/Dt field :l
:ule

[Examples:]

forceModels
(
    virtualMassForce
);
virtualMassForceProps
\{
    velFieldName "U";
    voidfractionFieldName "voidfraction"
    USFieldName "Us"
    phiFieldName "phi";
    smoothingModel off;
\} :pre

[Description:]

The force model performs the calculation of forces (e.g. fluid-particle
interaction forces) acting on each DEM particle. The {virtualMassForce} model
calculates the virtual mass force for each particle.

For more detail, see "Nijssen et al. (2020)"_#Nijssen2020.

:link(Nijssen2020)
[(Nijssen2020)] T.M.J. Nijssen, J.A.M. Kuipers, J. van der Stel, A.T. Adema, K.A. Buist. (2020):
"Complete liquid-solid momentum coupling for unresolved CFD-DEM simulations",
International Journal of Multiphase Flow

[Restrictions:]

IMPORTANT NOTE: Model not validated!

[Related commands:]

"forceModel"_forceModel.html