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October 30, 2009, 10:58 |
parasitic currents
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#1 |
Senior Member
Robert Castilla
Join Date: Apr 2009
Location: Spain
Posts: 109
Rep Power: 17 |
Hi,
I have working with high weber number flows (capillary flows) and I am finding som important parasitic currents in the interface. I have read that Brackbill (1992) J. Comput. Phys. 100 335-354, suggested to weight the surface tension force with the density in the cell in order to reduce this non-real currents. I have modified this term in interFoam, fvc::interpolate(interface.sigmaK())*fvc::snGrad(a lpha1) multiplying by fvc::interpolate(rho/(twoPhaseProperties.rho1()-twoPhaseProperties.r ho2()) The parasitic currents have been appreciably reduced. I am surprised than I so simple thing has not been before implemented in interFoam. Maybe there is some drawback that I don't know? Best regards |
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Tags |
capillary flows, interfoam, parasitic currents |
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