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Forum: OpenFOAM Running, Solving & CFD

October 21, 2010, 05:25

Replies: 14

Compressible Nozzle Flow

Views: 7,771

Posted By sebastian

Hi Chris! Thanks for the reply! Whish...

Hi Chris!

Thanks for the reply!

Whish there was installed a coupled solver here in OpenFoam. Of course I would have used that one instead.
I am currently running a transient calculation with...

Forum: OpenFOAM Running, Solving & CFD

October 20, 2010, 05:51

Replies: 14

Compressible Nozzle Flow

Views: 7,771

Posted By sebastian

Hi! I think I found the option transonic. So...

Hi!

I think I found the option transonic. So I switched it on by changing fvSolution:

SIMPLE
{
nNonOrthogonalCorrectors 0;
pMin pMin [1 -1 -2 0 0 0 0] 50000;
transonic true;
}

Forum: OpenFOAM Running, Solving & CFD

October 20, 2010, 03:22

Replies: 14

Compressible Nozzle Flow

Views: 7,771

Posted By sebastian

Hi! I have tried the limitation of the...

Hi!

I have tried the limitation of the gradient now. It seems that the calculation is a bit more stable and it runs a bit longer. But the result is the same - same problem occurs at the exit of my...

Forum: OpenFOAM Running, Solving & CFD

October 19, 2010, 08:45

Replies: 14

Compressible Nozzle Flow

Views: 7,771

Posted By sebastian

Hi Felix! Thanks! No, I have not tried that....

Hi Felix!

Thanks! No, I have not tried that. What exactly happens here if I use that grad scheme?

I will give it a try :)

Best regards,

Sebastian

Forum: OpenFOAM Running, Solving & CFD

October 19, 2010, 07:51

Replies: 14

Compressible Nozzle Flow

Views: 7,771

Posted By sebastian

Hello Felix! Yes, its the whole domain. I...

Hello Felix!

Yes, its the whole domain. I know its small. But for now this should be okay. I think this doesnt cause my problems.

Here my BCs. And a plot of the velocity-magnitude. Think for...

Forum: OpenFOAM Running, Solving & CFD

October 19, 2010, 05:56

Replies: 14

Compressible Nozzle Flow

Views: 7,771

Posted By sebastian

Hello Felix! Thanks for the quick answer!...

Hello Felix!

Thanks for the quick answer!

Yes, the problem is the same without turbulence. checkmesh says everything is okay.

Sorry, maybe my explanation was a bit misleading. I didnt mean...

Forum: OpenFOAM Running, Solving & CFD

October 19, 2010, 04:47

Replies: 14

Compressible Nozzle Flow

Views: 7,771

Posted By sebastian

Compressible Nozzle Flow

Hi all!

I am trying to perform a steady state simulation of a compressible flow through a nozzle with a development of a jet behind it, using the k-epsilon model.

I was playing around now for...

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