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shallowWaterFoam using PIMPLE without h.relax() |
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November 20, 2015, 02:39 |
shallowWaterFoam using PIMPLE without tmp and h.relax()
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Member
Karelke Yu
Join Date: Dec 2014
Posts: 96
Rep Power: 11 |
dear foamers.
i am grateful that people are interested in shallowWaterFoam or the PIMPLE algo. but in OF-2.3.0, i got some questions about the shallowWaterFoam implemented with the PIMPLE. (1) why the momentumPredictor hUEqn is not declared by tmp<fvVectorMatrix> and later cleared if pimple.nCorrPISO() <=1, as the UEqn in pimpleFoam? (2) why the water depth h is not relaxed after the hEqn is solved, as the pEqn in pimpleFoam? can h.relax() be added and what's the effect on the result? (3) since there is a temporal derivative in the hEqn, what makes it different with the general pressure equation (say pEqn in pimpleFoam). what does the hEqn.flux() do and why phi = phiHbyA + hEqn.flux() makes the fluxes conservative? or what is the conservative face flux for the hEqn with a temporal derivative? if the above questions are related to (or depend on) what i intend to solve, please give me some hints if there is a general manner. thanks in advance. best, karelke Last edited by cfdopenfoam; November 20, 2015 at 23:57. |
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