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Showing results 1 to 14 of 14 Search took 0.01 seconds. Search: Posts Made By: Daniele111

Forum: OpenFOAM Running, Solving & CFD June 16, 2010, 10:12

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 I'm getting crazy! I'm using your bc, my mesh is... I'm getting crazy! I'm using your bc, my mesh is 250X10 cell 250 along main flow and 10 along height. First cell height is 0.9 m vertices ( (0 0 0) (1000 0 0) (1000 100 0) (0...

Forum: OpenFOAM Running, Solving & CFD June 16, 2010, 05:08

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 I try to use your bc setup, but the velocity... I try to use your bc setup, but the velocity field along main flow is these. It's correct? What is your first cell higth? My domain is higth 100m

Forum: OpenFOAM Running, Solving & CFD June 15, 2010, 17:53

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 Thank you! I must simulate sand dune evolution.... Thank you! I must simulate sand dune evolution. So I would calculate shear stress at bottom. Thank you again What are these fields in your groovy bc? refValue uniform 0; ...

Forum: OpenFOAM Running, Solving & CFD June 15, 2010, 16:01

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 Can i see your bc? Can i see your bc?

Forum: OpenFOAM Running, Solving & CFD June 15, 2010, 15:02

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 Hi Bah I try to use absurd values of Ks and Cs,... Hi Bah I try to use absurd values of Ks and Cs, but the result is always the same; I copied the turbulenceModels folder of OpenFOAM 1.6.x and I copy it in src folder of OpenFOAM 1.6 and the I...

Forum: OpenFOAM Running, Solving & CFD June 15, 2010, 06:01

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 I just use groovyBc,... I just use groovyBc, timeVaryingMappedFixedValue-BC is not the problem, it's the same thing. I don't understand when you say that I would define the constants of the wall function in the nut-file....

Forum: OpenFOAM Running, Solving & CFD June 15, 2010, 05:47

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 My Ks=20*y0, but where is th mistake? Your... My Ks=20*y0, but where is th mistake? Your Cs=0.5? E in your simulation epsilon, k are constant in the first cell along main flow direction, my x-axis?

Forum: OpenFOAM Running, Solving & CFD June 15, 2010, 05:36

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 My Bc. Thanks you again My Bc. Thanks you again

Forum: OpenFOAM Running, Solving & CFD June 15, 2010, 05:32

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 Wss, is wall shear stress, my z0 is 0.001,... Wss, is wall shear stress, my z0 is 0.001, Ks=0.02, Cs=0.5 it's wrong? Thanks you!

Forum: OpenFOAM Running, Solving & CFD June 15, 2010, 05:13

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 Main flow direction, change inlet p condition: Main flow direction, change inlet p condition:

Forum: OpenFOAM Running, Solving & CFD June 15, 2010, 05:04

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 Hi What are the correct boundary conditions for... Hi What are the correct boundary conditions for p field in these simulation? Thanks

Forum: OpenFOAM Running, Solving & CFD June 14, 2010, 11:58

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 using openfoam 1.6.x the overshooting there... using openfoam 1.6.x the overshooting there isn't; but I Have another problem: in atmospheric boundary layer simulation, th wall value of epsilon and k would be costant? In my simulation these value...

Forum: OpenFOAM Running, Solving & CFD June 14, 2010, 06:05

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 Hi I read this paper, useful. But the problem... Hi I read this paper, useful. But the problem is openfoam 1.6! I use now wall function of 1.6.x and I haven't overshooting problem,thanks you

Forum: OpenFOAM Running, Solving & CFD June 13, 2010, 06:55

Replies: 50 Atmospheric boundary layer Views: 14,594 Posted By Daniele111 Atmospheric boundary layer Hi I try to simulate an atmospheric boundary layer, on bottom I use wall function, but if i use nutRoughWallFunction, epsilon has a overshooting in last cells why? Best Regards

Showing results 1 to 14 of 14

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