voidfractionModel_dividedVoidFraction command

Syntax:

Defined in couplingProperties dictionary.

voidfractionModel divided;
dividedProps
{
    alphaMin number1;
    scaleUpVol number2;
    interpolation;
} 

• number1 = mininmum limit for voidfraction
• number2 = diameter of the particle's representation is artificially increased according to number2 * Vparticle, volume remains unaltered!
• interpolation = flag to interpolate voidfraction to particle positions (normally off)

Examples:

voidfractionModel divided;
dividedProps
{
    alphaMin 0.2;
    scaleUpVol 1.0;
} 

Description:

The divided voidFraction model is supposed to be used when a particle (or it's representation) is in the size range of a CFD cell. Satellite points are used to divide the particle's volume to the touched cells.

The region of influence of a particle can be increased artificially by "scaleUpVol", which blows up the particles, but keeps their volume (for voidfraction calculation) constant.

Restrictions: none.

Related commands:

voidfractionModel