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Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: vkrastev

Forum: OpenFOAM Running, Solving & CFD February 10, 2012, 04:40

Replies: 18 pisoFoam pressure issue Views: 6,992 Posted By vkrastev Ok, if changing the BC for U at the outlet... Ok, if changing the BC for U at the outlet doesn't make any change, then probably it is time to rebuild the mesh... V.

Forum: OpenFOAM Running, Solving & CFD February 9, 2012, 17:21

Replies: 18 pisoFoam pressure issue Views: 6,992 Posted By vkrastev The fixed value for U at the outlet is an error... The fixed value for U at the outlet is an error (in an incompressible solver you cannot fix both pressure and velocity at an outlet): use zeroGradient or inletOutlet for U. Although it should be less...

Forum: OpenFOAM Running, Solving & CFD January 30, 2012, 06:26

Replies: 18 pisoFoam pressure issue Views: 6,992 Posted By vkrastev Ok, here they are my advices: 1) lower all... Ok, here they are my advices: 1) lower all your absolute tolerances (the tolerance entry in the fvSolution file), except the pFinal one, to let's say 1e-12 (from your log file I see that you are...

Forum: OpenFOAM Running, Solving & CFD January 25, 2012, 05:13

Replies: 18 pisoFoam pressure issue Views: 6,992 Posted By vkrastev Ok, let's start with the mesh: if you were... Ok, let's start with the mesh: if you were simulating with a RANS approach i would say that the the checkMesh is quite ok (I usually don't like to have pyramids in my domain, but that's only my...

Forum: OpenFOAM Running, Solving & CFD January 24, 2012, 13:37

Replies: 18 pisoFoam pressure issue Views: 6,992 Posted By vkrastev Yes, but this doesn't mean that you cannot reach... Yes, but this doesn't mean that you cannot reach a reasonable run time concerning the single time step (the real problem with LES is that you have to run it for a huge number of time steps): 128...

Forum: OpenFOAM Running, Solving & CFD January 24, 2012, 05:39

Replies: 18 pisoFoam pressure issue Views: 6,992 Posted By vkrastev With LES turbulence modeling, you have to respect... With LES turbulence modeling, you have to respect the MaxCo < 1 condition (sometimes even lower), otherwise you will not resolve adequately the turbulence time scales (in simple words: if you succeed...

Showing results 1 to 6 of 6

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