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Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: 1/153

Forum: OpenFOAM Running, Solving & CFD September 18, 2012, 13:04

Replies: 48 Wall treatment with OpenFOAM Views: 49,494 Posted By 1/153 On a coarse mesh, you still need wall function,... On a coarse mesh, you still need wall function, there is no way to evaluate the gradient correctly in a coarse grid unless we "correct" the 1st cell values by law of wall. These models (S-A and...

Forum: OpenFOAM Running, Solving & CFD September 18, 2012, 11:06

Replies: 48 Wall treatment with OpenFOAM Views: 49,494 Posted By 1/153 Remember all of these efforts are under the eddy... Remember all of these efforts are under the eddy viscosity framework, they are not the end, their aim is to estimate the Reynolds stress accurately in the momentum equation. These equations have...

Forum: OpenFOAM Running, Solving & CFD September 18, 2012, 10:33

Replies: 48 Wall treatment with OpenFOAM Views: 49,494 Posted By 1/153 IMO, Realizability constraints should be ALWAYS... IMO, Realizability constraints should be ALWAYS satisfied, it does no harm, so use it instead of using the standard one. This indeed gives us lots of flexibility as well as lots of confusion,...

Forum: OpenFOAM Running, Solving & CFD September 15, 2012, 13:42

Replies: 48 Wall treatment with OpenFOAM Views: 49,494 Posted By 1/153 My understanding is: if y+ ~ 1, no need of any... My understanding is: if y+ ~ 1, no need of any wall function (omegaWallFunction in OF can be still used though), y+ in log, standard wall function applies. ** the difficulty is in complex flows,...

Forum: OpenFOAM Running, Solving & CFD September 14, 2012, 11:26

Replies: 48 Wall treatment with OpenFOAM Views: 49,494 Posted By 1/153 These are for wall function. ... These are for wall function. omegawallfunction is written in a way to be continuous, which means they can be used in low-re mode. nut should depends on the turb model, and is the most...

Forum: OpenFOAM Running, Solving & CFD August 23, 2012, 23:00

Replies: 48 Wall treatment with OpenFOAM Views: 49,494 Posted By 1/153 Yes, OpenFOAM will overwrite the default nut once... Yes, OpenFOAM will overwrite the default nut once you set your own.

Showing results 1 to 6 of 6

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