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Forum: OpenFOAM Running, Solving & CFD

July 23, 2007, 04:34

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi Eugene I used atomospher

Hi Eugene

I used atomospher condition in top&outlet boundries.but it seems the solution isn't good for turbulent plate.
Do you think i must increase the altitude of my geometry(in this case...

Forum: OpenFOAM Running, Solving & CFD

July 18, 2007, 08:01

Replies: 218

LES

Views: 58,697

Posted By marhamat

That's right. But i want to

That's right.

But i want to know in which condition(with which changes)i can get result for turbulent flat plate with zero pressure gradient.

Best regards
Marhamat

Forum: OpenFOAM Running, Solving & CFD

July 18, 2007, 03:25

Replies: 218

LES

Views: 58,697

Posted By marhamat

Yes,the outlet pressure is zer

Yes,the outlet pressure is zero
In this case i used two blockes that in block one the bottom wall is symmetryplane(200mm).and the plate set after it.

Marhamat

Forum: OpenFOAM Running, Solving & CFD

July 18, 2007, 01:08

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi Cedric The geometry is s

Hi Cedric

The geometry is same as the last geometry that i point it out (on Saturday, May 05, 2007 - 01:55 am )in this page but in 3D and with these conditions:
Inlet for inlet BC & outlet for...

Forum: OpenFOAM Running, Solving & CFD

July 17, 2007, 09:41

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi everyone I add that i us

Hi everyone

I add that i used symmetryplane as a upperwall boundry condition.
any idea?

Regards
Marhamat

Forum: OpenFOAM Running, Solving & CFD

July 15, 2007, 04:46

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi everyone By using oodles f

Hi everyone
By using oodles for turbulent flat plate simulation in 3D(that in it back&front are symmetryplane)i see pressure gradient in my solution.
How i can justify that? ...

Forum: OpenFOAM Running, Solving & CFD

May 5, 2007, 03:55

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi Maka I used channelOodles

Hi Maka
I used channelOodles for this case(turbulent flat plate) with below settings.
Dimentions (1000 100 1)mm for 2D analysis with two blocks
(
hex (0 1 2 3 4 5 6 7) (20 100...

Forum: OpenFOAM Running, Solving & CFD

April 27, 2007, 17:28

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi Maka Thanks alot for your

Hi Maka
Thanks alot for your kindness

As you see in this page i had some experience in using oodles and channelOodles tutorial for turbulent pipe flow simulation.
The process for getting...

Forum: OpenFOAM Running, Solving & CFD

April 16, 2007, 07:37

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi I'm interested in LES o

Hi

I'm interested in LES of turbulent flat plate
Do you have any experience in this field ?
What is the challenge in this case?
With which conditions you get right results?

Best...

Forum: OpenFOAM Running, Solving & CFD

February 22, 2007, 07:27

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hello everybody I imposed t

Hello everybody

I imposed the perturbU package that suggested in this page to the case similar to channel395.
But after runnig perturbation die out fast and i didn't see turbulent structures ....

Forum: OpenFOAM Running, Solving & CFD

December 11, 2006, 01:44

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi Alberto In your last expla

Hi Alberto
In your last explanation(Thursday, November 30, 2006 )we have:
C_s = sqrt(C_k * sqrt(C_k/C_e))
In many of OpenFOAM LES models for example in one equation eddy model...

Forum: OpenFOAM Running, Solving & CFD

December 1, 2006, 17:47

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi Alberto I think my mesh si

Hi Alberto
I think my mesh size are fine enough(65,40,60).
Re=4000 &inlet velocity is uniform =2m/s
I used Turbinlet for inlet boundry condition &
inletOutlet for output boundry condition. ...

Forum: OpenFOAM Running, Solving & CFD

December 1, 2006, 10:32

Replies: 218

LES

Views: 58,697

Posted By marhamat

Thanks a lot Alberto Your ex

Thanks a lot Alberto
Your explanation are very usefull.
For Openfoam examination when we use LES for turbulence modelein i used oodles for turbulent pipe flow . I do this by changing in mesh...

Forum: OpenFOAM Running, Solving & CFD

November 27, 2006, 07:56

Replies: 218

LES

Views: 58,697

Posted By marhamat

Dear Alberto Thanks for your

Dear Alberto
Thanks for your kindness.
But this paper is not avaiable for me.If it is possible to you please mail it to my Email
Regard
Marhamat

Forum: OpenFOAM Running, Solving & CFD

November 27, 2006, 04:16

Replies: 218

LES

Views: 58,697

Posted By marhamat

Thanks a lot Alberto marhamat

Thanks a lot Alberto
marhamat

Forum: OpenFOAM Running, Solving & CFD

November 26, 2006, 02:20

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi In lesmodels some paramet

Hi
In lesmodels some parameters&cofficients identified(for example:ck,cI,ce,...) that are strange for me.
How i can reach to basic knowledge about them.
Are any usefull reference in this...

Forum: OpenFOAM Running, Solving & CFD

November 22, 2006, 03:54

Replies: 218

LES

Views: 58,697

Posted By marhamat

Hi everyone I used oodles f

Hi everyone

I used oodles for turbulent pipe flow modeling
but the results are not as I expected from LES.

I do this with mesh&parameter changing in pitzDaily.

Please help me.
...

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