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how is latent heat acounted for during phase change in compressibleInterFoam of9? |
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April 20, 2023, 12:16 |
how is latent heat acounted for during phase change in compressibleInterFoam of9?
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New Member
S Abrahams
Join Date: Mar 2022
Location: UK
Posts: 15
Rep Power: 4 |
I'm using compressibleInterFoam in OpenFOAM 9. It is possible to allow phase change using the Kunz, Merkle or Schnerr-Sauer models.
I expected there to be a source term in the temperature equation to account for the latent heat taken/released during vaporisation/condensation. I can't see any such source term or any correction to the temperature due to phase change. Code:
fvScalarMatrix TEqn ( fvm::ddt(rho, T) + fvm::div(rhoPhi, T) - fvm::Sp(contErr, T) - fvm::laplacian(turbulence.alphaEff(), T) + ( fvc::div(fvc::absolute(phi, U), p)()() // - contErr/rho*p + (fvc::ddt(rho, K) + fvc::div(rhoPhi, K))()() - (U()&(fvModels.source(rho, U)&U)()) - contErr*K ) *( alpha1()/mixture.thermo1().Cv()() + alpha2()/mixture.thermo2().Cv()() ) == fvModels.source(rho, T) ); TEqn.relax(); fvConstraints.constrain(TEqn); TEqn.solve(); fvConstraints.constrain(T); mixture.correctThermo(); mixture.correct(); Is a latent heat source term or temperature correction defined elsewhere? Or is the latent heat energy not accounted for in this solver? |
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compressibleinterfoam, latent heat, phase change |
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