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54 lines
1.6 KiB
Plaintext
54 lines
1.6 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 IB command :h3
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[Syntax:]
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Defined in "couplingProperties"_CFDEMcoupling_dicts.html#couplingProperties
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dictionary.
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voidfractionModel IB;
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IBProps
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\{
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maxCellsPerParticle number1;
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alphaMin number2;
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scaleUpVol number3;
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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} = diameter of the particle's representation is artificially increased according to {number3} * Vparticle, volume remains unaltered! :l
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:ule
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[Examples:]
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voidfractionModel IB;
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IBProps
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\{
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maxCellsPerParticle 1000;
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alphaMin 0.10;
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scaleUpVol 5.0;
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\} :pre
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[Description:]
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The IB 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 model is specially designed for cfdemSolverIB and creates a smooth transition of the voidfraction at the particle surface. Cells which are only partially covered by solid are marked by voidfraction values between 0 and 1 respectively.
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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.
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Code of this sub-model contributed by Alice Hager, JKU.
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[Restrictions:]
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none
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[Related commands:]
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"voidfractionModel"_voidFractionModel.html
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