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Is lift force included by default in mppiccloud? |
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#1 |
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Hello, this must be something very simple but I am lost reading the api description, the question is, is the LiftForce included by default in the particleForces for mppiccloud? I am using of12. I checked the tutorials and all of them include at the most drag and gravity. Thanks a lot.
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#2 |
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Ok there is no default lift force, I followed some other posts, and arrived to these dictionaries modifications in cloudProperties:
Code:
interpolationSchemes { rho.air cell; U.air cellPointWallModified; mu.air cell; alpha.air cell; curlUcDt cell; //<- this } Code:
particleForces { ErgunWenYuDrag { alphac alpha.air; } gravity; //this -> SaffmanMeiLiftForce { U U.air; } } Code:
--> FOAM FATAL ERROR: Carrier phase curlUc interpolation object not set Thanks a lot |
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#3 |
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Utkan Caliskan
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You probably need to define curlUc instead of curlUcDt in interpolationSchemes.
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#5 |
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Ok I am going back may be, there is a LiftForce that calculates (from LiftForce.C):
Code:
forceSuSp value(Zero, 0.0); const vector curlUc = curlUcInterp().interpolate ( p.coordinates(), p.currentTetIndices(td.mesh) ); scalar Cl = this->Cl(p, td, curlUc, Re, muc); value.Su() = mass/p.rho()*td.rhoc()*Cl*((td.Uc() - p.U())^curlUc) Code:
Foam::scalar Foam::LiftForce<CloudType>::LiftForce::Cl ( const typename CloudType::parcelType& p, const typename CloudType::parcelType::trackingData& td, const vector& curlUc, const scalar Re, const scalar muc ) const { // dummy return 0.0; } |
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