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63 lines
1.6 KiB
Plaintext
63 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
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more than {number1} cells are covered by the particle) :ulb,l
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{number2} = minimum limit for void fraction :l
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{number3} = diameter of the particle's representation is artificially increased
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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} void fraction model is supposed to be used when a particle (or its
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representation) is bigger than a CFD cell. The void fraction field is set in
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those cell whose centres are inside the particle. The model is specially
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designed for cfdemSolverIB and creates a smooth transition of the void fraction
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at the particle surface. Cells which are only partially covered by solid are
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marked by void fraction values between 0 and 1 respectively.
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The region of influence of a particle can be increased artificially by
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"scaleUpVol", which blows up the particles, but keeps their volume (for
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void fraction calculation) constant.
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Code of this sub-model was 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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