Search Results

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

Forum: OpenFOAM Running, Solving & CFD

April 27, 2010, 13:35

Replies: 10

Accuracy of wall shear and velocity

Views: 2,094

Posted By kjetil

I had some mixed experiences now using this...

I had some mixed experiences now using this method - even the cases still running with wall functions are not that bad. In short, when not using wall functions, the result is pretty much similar to...

Forum: OpenFOAM Running, Solving & CFD

April 27, 2010, 06:15

Replies: 10

Accuracy of wall shear and velocity

Views: 2,094

Posted By kjetil

Right. Well, the reason I'm asking is because nut...

Right. Well, the reason I'm asking is because nut is created/calculated, but automatically set with condition nutWallFunction for walls. As I have disabled wall functions for epsilon and k, I am not...

Forum: OpenFOAM Running, Solving & CFD

April 27, 2010, 05:33

Replies: 10

Accuracy of wall shear and velocity

Views: 2,094

Posted By kjetil

Great. Using a low Re actually works for higher...

Great. Using a low Re actually works for higher Re .. I wouldn't have guessed ;)

About the nut file, would you set it to ~0, zeroGradient, or delete it and let OF create it by itself?

Forum: OpenFOAM Running, Solving & CFD

April 26, 2010, 10:07

Replies: 10

Accuracy of wall shear and velocity

Views: 2,094

Posted By kjetil

Right, I have heard about using those non-zero...

Right, I have heard about using those non-zero conditions ..

Did you ever try this for higher Re? In my case I am in the range 50000 - 300000.

Forum: OpenFOAM Running, Solving & CFD

April 26, 2010, 09:40

Replies: 10

Accuracy of wall shear and velocity

Views: 2,094

Posted By kjetil

Thanks for your quick response Jose, I did...

Thanks for your quick response Jose,

I did use Launder-Sharma for a low Re case, and even with wall functions (that is, using the built-in functions for k, epsilon, and nut) the results were...

Forum: OpenFOAM Running, Solving & CFD

April 26, 2010, 08:31

Replies: 10

Accuracy of wall shear and velocity

Views: 2,094

Posted By kjetil

Mesh effect on wall shear and velocity

Dear foamers,

I am comparing my High Re straight pipe simulations with some experimental data, using RANS turbulence and a wedge geometry in blockMesh. When trying to refine my mesh from 60 cells...

Showing results 1 to 6 of 6

Forum Jump

All times are GMT -4. The time now is 20:18.