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problems about surfaceTension implement in reactingmultiphaseFoam |
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July 24, 2019, 22:30
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problems about surfaceTension implement in reactingmultiphaseFoam
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#1 |
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New Member
Yang Fan
Join Date: Jul 2019
Posts: 1
Rep Power: 0  |
Hello.I am studying the reactingmultiphaseEulerFoam,
the code for surfaceTension implement is: Code:
surfaceScalarField ghSnGradRho
(
"ghSnGradRho",
ghf*fvc::snGrad(rho)*mesh.magSf()
); //g*h*\Delta \codt \rho
phigFs.set
(
phasei,
(
alpharAUfs[phasei]
*(
ghSnGradRho
- (fvc::interpolate(phase.rho() - rho))*(g & mesh.Sf())
- fluid.surfaceTension(phase)*mesh.magSf()
)
).ptr()
);
Code:
mSfGradp = pEqnIncomp.flux()/rAUf;
forAll(phases, phasei)
{
phaseModel& phase = phases[phasei];
phase.U() =
HbyAs[phasei]
+ fvc::reconstruct
(
alpharAUfs[phasei]*mSfGradp
- phigFs[phasei]
);
phase.U().correctBoundaryConditions();
fvOptions.correct(phase.U());
}
![\mathbf{U}_{i}=\mathbf{H} \mathbf{b y A}_{i}+\frac{-\alpha_{i} \nabla p_{r g h}}{A_{P, i}}-\frac{\left[\left(\alpha_{i} \mathbf{g} \cdot \mathbf{h} \nabla \rho-\alpha_{i}\left(\rho_{i}-\rho\right) \mathbf{g}\right)-\sigma \kappa \nabla \alpha_{i}\right]}{A_{p, i}}](/Forums/vbLatex/img/01797a06abdeab4ec42b15fe6bff50d1-1.gif "\mathbf{U}_{i}=\mathbf{H} \mathbf{b y A}_{i}+\frac{-\alpha_{i} \nabla p_{r g h}}{A_{P, i}}-\frac{\left[\left(\alpha_{i} \mathbf{g} \cdot \mathbf{h} \nabla \rho-\alpha_{i}\left(\rho_{i}-\rho\right) \mathbf{g}\right)-\sigma \kappa \nabla \alpha_{i}\right]}{A_{p, i}}") the code seems to be: ![\mathbf{U}_{i}=\mathbf{H} \mathbf{b y A}_{i}+\frac{-\alpha_{i} \nabla p_{r g h}}{A_{P, i}}-\frac{\left[\left(\alpha_{i} \mathbf{g} \cdot \mathbf{h} \nabla \rho-\alpha_{i}\left(\rho_{i}-\rho\right) \mathbf{g}\right)-\alpha_{i}\sigma \kappa \nabla \alpha_{i}\right]}{A_{p, i}}](/Forums/vbLatex/img/056728ea5daf97bf53a4847a6fe6dbaa-1.gif "\mathbf{U}_{i}=\mathbf{H} \mathbf{b y A}_{i}+\frac{-\alpha_{i} \nabla p_{r g h}}{A_{P, i}}-\frac{\left[\left(\alpha_{i} \mathbf{g} \cdot \mathbf{h} \nabla \rho-\alpha_{i}\left(\rho_{i}-\rho\right) \mathbf{g}\right)-\alpha_{i}\sigma \kappa \nabla \alpha_{i}\right]}{A_{p, i}}") an addition alpha_{i} is add to surfaceTension,any one can show me what's the problem? |
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| Tags |
| reactingmultiphaseeuler, surfacetension |
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