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Density averaging the surface tension term in interFoam |
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March 30, 2022, 12:32 |
Density averaging the surface tension term in interFoam
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Member
Venkat Ganesh
Join Date: May 2020
Location: Cincinnati, Ohio
Posts: 49
Rep Power: 6 |
Hey multiphase researchers, I'm trying a standard modification to the surface tension term in interFoam which has been suggested in Brackbill's paper on CSF method, which is to include a density averaging term in the surface tension force term calculation. (I've shared an image of the equation)
In code within openfoam, the current surface tension force term without the density averaging is implemented as Code:
fvc::interpolate(sigmaK())*fvc::snGrad(alpha1) Code:
fvc::interpolate(sigmaK()*rho)*fvc::snGrad(alpha1)*2/(rho1+rho2) I'm sharing an image of the bubble shape I obtained using the current code for reference. It would be great if someone could confirm if they've faced similar issues with adopting the change as well. "Brackbill, J. U., Kothe, D. B., & Zemach, C. (1992). A continuum method for modeling surface tension. Journal of computational physics, 100(2), 335-354." |
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Tags |
csf model, interfoam, surface tension |
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