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Problem solving NACA airfoil

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Old   November 8, 2008, 02:39
Default Hi Gianluca, What kinematic
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Mathieu Olivier
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Hi Gianluca,

What kinematic viscosity (nu) are you using. Maybe your Reynolds number is too high for the flow to remain laminar ?

Mathieu
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Old   November 8, 2008, 05:10
Default hi Gianluca i'm rather new
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antonio segalini
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hi Gianluca

i'm rather new of OpenFOAM too, but why don't you read this thread:

IcoFoam 2D airfoil - convergence problems

in this forum. Maybe it will help you.

good luck
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Old   November 8, 2008, 07:44
Default Gianluca, how can you make th
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Ivan Flaminio Cozza
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Gianluca,
how can you make this mesh with gmesh? Is gmesh now capable to add prism layers near a wall?
This could be a very nice news!
Can you explain me something about this?
Bye, Ivan
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Old   November 8, 2008, 19:15
Default Hi Gianluca, In a first vie
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Paulo Alexandre Costa Rocha
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Hi Gianluca,

In a first view, I noticed that you have fixedValue for 'p' and 'U' at the inlet, and zeroGradient at the outlet.

For your purposes (I guess), you have to interchange the BC types, i.e., fixedValue for 'U' and zeroGradient for 'p' at the inlet, and zeroGradient for 'U' and fixedValue for 'p' at the outlet (your reference pressure).

You may want to see the case at this link:

http://www.posmec.ufc.br/~paulo/Open...perc_ke.tar.gz

It's a 1.4.1 case.

Hope this helps.

Regards,

Paulo.
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Old   November 16, 2008, 14:05
Default First of all I apologize for t
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Gianluca VZ
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First of all I apologize for the late answer.. I've been VERY busy but I didn't want to disappear without answering.


@Mathieu
Re was 10e5, I think that wasn't the problem.

@Antonio
Thanks, I didn't find that thread before, I found some useful hints in it.

@Ivan
I used gmesh and wrote a little script to "manually" edit the .geo file.
Look at tutorials t3.geo and t6.geo and at the gmesh manual. It's pretty clear.

@Paulo
Thank you very much I think that was my mistake.


Now everything works.
Thanks to everybody.

Regards.

Gianluca
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