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Showing results 1 to 7 of 7 Search took 0.00 seconds. Search: Posts Made By: msuaeronautics

Forum: OpenFOAM Running, Solving & CFD May 18, 2015, 11:55

Replies: 38 Convection discretization schemes for LES Views: 15,291 Posted By msuaeronautics I usually set this equal to k_inlet. I usually set this equal to k_inlet.

Forum: OpenFOAM Running, Solving & CFD April 11, 2015, 21:07

Replies: 38 Convection discretization schemes for LES Views: 15,291 Posted By msuaeronautics Based on my studies, limitedLinear works pretty... Based on my studies, limitedLinear works pretty well for DES. Avoid the upwind/2nd order upwind schemes like the plague. I use a k value of 0.1-0.3 based on trial and error using a simple case; i.e. ...

Forum: OpenFOAM Running, Solving & CFD April 9, 2015, 16:34

Replies: 38 Convection discretization schemes for LES Views: 15,291 Posted By msuaeronautics That makes sense. I have done study on... That makes sense. I have done study on sphere using DDES. I take the time average of the flow and compute the drag from the sum of pressure and viscous forces acting on the body from the mean...

Forum: OpenFOAM Running, Solving & CFD April 9, 2015, 16:01

Replies: 38 Convection discretization schemes for LES Views: 15,291 Posted By msuaeronautics How are you calculating Cd? Are you using an... How are you calculating Cd? Are you using an ensemble average of a list of outputs?

Forum: OpenFOAM Running, Solving & CFD April 9, 2015, 15:34

Replies: 38 Convection discretization schemes for LES Views: 15,291 Posted By msuaeronautics No need to apologize. Yes, for nuSgs and y+ ~1,... No need to apologize. Yes, for nuSgs and y+ ~1, you may use nuSgs_WALL ~ 0. Your condition for K_WALL should also be near 0. I am assuming you are using 1-equation eddy. The condition for...

Forum: OpenFOAM Running, Solving & CFD April 9, 2015, 14:09

Replies: 38 Convection discretization schemes for LES Views: 15,291 Posted By msuaeronautics nuSgs -> 0 is the correct BC for the wall... nuSgs -> 0 is the correct BC for the wall (if, for nothing else, the equation you wrote there) and really is the only reasonable one. How nuSgs varies as we start to move away from the wall...

Forum: OpenFOAM Running, Solving & CFD April 9, 2015, 11:27

Replies: 38 Convection discretization schemes for LES Views: 15,291 Posted By msuaeronautics K should always tend to zero at the wall, as it... K should always tend to zero at the wall, as it represents your modeled portion of turbulence kinetic energy. In the case of LES, K is the (modeled) turbulence energy of the subgrid scales. Since...

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