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55 lines
1.7 KiB
Plaintext
55 lines
1.7 KiB
Plaintext
"CFDEMproject Website"_lws - "Main Page"_main :c
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:link(lws,http://www.cfdem.com)
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:link(main,CFDEMcoupling_Manual.html)
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:line
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voidfractionModel Gauss command :h3
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[Syntax:]
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Defined in couplingProperties dictionary.
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voidfractionModel Gauss;
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GaussProps
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\{
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maxCellsPerParticle number1;
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alphaMin number2;
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weight number3;
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porosity number4;
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\} :pre
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{number1} = maximum number of cells covered by a particle (search will fail when more than {number1} cells are covered by the particle) :ulb,l
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{number2} = minimum limit for voidfraction :l
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{number3} = (optional) scaling of the particle volume to account for porosity or agglomerations. :l
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{number4} = (optional) diameter of the particle's representation is artificially increased according to {number2} * Vparticle, volume remains unaltered! :l
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:ule
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[Examples:]
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voidfractionModel Gauss;
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GaussProps
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\{
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maxCellsPerParticle 1000;
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alphaMin 0.10;
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weight 1.;
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porosity 1.;
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\} :pre
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[Description:]
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The Gauss voidFraction model is supposed to be used when a particle (or its representation) is bigger than a CFD cell. The voidfraction field is set in those cell whose centres are inside the particle. The volume is here distributed according to a Gaussian distribution.
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The region of influence of a particle can be increased artificially by "porosity", which blows up the particles, but keeps their volume (for voidfraction calculation) constant.
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The particle volume occupied in the CFD domain can be adjusted by the parameter "weight", using Vparticle=dsphere^3*pi/6*weight.
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[Restrictions:] none.
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[Related commands:]
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"voidfractionModel"_voidFractionModel.html,
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"bigParticle"_voidFractionModel_bigParticleVoidFraction.html
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