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Search: Posts Made By: andreas
Forum: OpenFOAM Running, Solving & CFD May 21, 2013, 14:01
Replies: 3
Views: 335
Posted By andreas
Hello Tobi, and thank you for your answer. I...

Hello Tobi, and thank you for your answer.

I am working on interFoam as well!

What you are saying is that the density is averaged on each cell automatically?
What about other parameters? Is...
Forum: OpenFOAM Running, Solving & CFD May 21, 2013, 05:14
Replies: 3
Views: 335
Posted By andreas
Equation Solving in Multiphase Flow

Dear foamers,

I would like to know how are the Navier-Stokes equations solved in a multiphase flow.

Let's consider a liquid/air flow. When a mesh is full of liquid or air, the equation...
Forum: OpenFOAM Running, Solving & CFD March 14, 2013, 04:40
Replies: 1
Views: 225
Posted By andreas
Running in parallel mysteries

Dear foamers,

I want to run a fine mesh (1200*400) on OF and for that I need to run in parallel. I run a first time with some 18cpu and the simulation went to 0.1sec after 3 days. I took the same...
Forum: ParaView March 7, 2013, 06:29
Replies: 2
Views: 498
Posted By andreas
Thank you Wyldckat! I have another question,...

Thank you Wyldckat!

I have another question, let's say I created this .foam file, is it possible to open it from the shell on paraview?

What I have to do now is to open the paraview program,...
Forum: OpenFOAM Paraview & paraFoam March 6, 2013, 11:43
Replies: 1
Views: 409
Posted By andreas
How to use paraFoam on a cluster

Dear foamers,

I would like to use the paraFoam command on a cluster. I connect my computer on it with an ssh connection. The cluster has paraview installed, so I can run paraview on the terminal...
Forum: ParaView March 5, 2013, 12:01
Replies: 2
Views: 498
Posted By andreas
Use paraView without installing openFoam

Dear foamers,

I have some difficulties installing openFoam on my mac, and since I use clusters to do my simulations, I don't really need openFoam on it.

So I would like to use my mac only to...
Forum: OpenFOAM Pre-Processing February 11, 2013, 11:01
Replies: 6
Views: 460
Posted By andreas
Thank you for your quick response, I did a...

Thank you for your quick response,

I did a patch for the outlet, inlet and walls. I can impose a value (let's say pressure or velocity), but don't know how to extract information (let's say phase...
Forum: OpenFOAM Pre-Processing February 10, 2013, 13:11
Replies: 6
Views: 460
Posted By andreas
The boundary conditions would be like this: ...

The boundary conditions would be like this:


type groovyBC;
valueExpression "x1*100000 + x2*88229";
variables "x1 = 1-alpha1; x2 = alpha1";
value uniform 88229;
...
Forum: OpenFOAM Pre-Processing February 10, 2013, 11:25
Replies: 6
Views: 460
Posted By andreas
Thank you for your reply, x1 and x2 are the...

Thank you for your reply,

x1 and x2 are the volume fraction of both phases on the boundary patch.
Here is an image of the simulation for a better understanding.

The pressure on the inlet is...
Forum: OpenFOAM Pre-Processing February 9, 2013, 13:33
Replies: 6
Views: 460
Posted By andreas
Dynamic bc

Dear foamers,

I am quite a beginner in OF and CFD, that's why I need your help :-)

My problem is as follow:
I have a multiphase flow. And I want to impose the pressure on a plane depending on...
Forum: OpenFOAM November 26, 2012, 04:42
Replies: 2
Views: 692
Posted By andreas
Thank you for your answer! I added that line...

Thank you for your answer!

I added that line in the fvSchemes, as well as the
laplacian(nuEff,U) Gauss linear corrected;
in the laplacianSchemes.

Still, the terminal doesn't find the "g"...
Forum: OpenFOAM November 25, 2012, 08:20
Replies: 2
Views: 692
Posted By andreas
Hydrostatic Pressure in a cube

Dear Foamers,

I would like to understand how to implement hydrostatic pressure on a wall. I am a beginner with OF.

For that, I created a simple cube mesh:

convertToMeters 1;

vertices
(
Forum: OpenFOAM November 15, 2012, 14:05
Replies: 5
Views: 968
Posted By andreas
It was not the problem, paraFoam still doesn't...

It was not the problem, paraFoam still doesn't work.
And it still closes automaticaly when the "apply" button is pushed.

This is the response on the terminal when blockMesh is generated:

...
Forum: OpenFOAM November 12, 2012, 16:07
Replies: 5
Views: 968
Posted By andreas
Initial conditions for uniform flow

Hello,

I'm new in CFD and would like to know how to write the initial conditions for an incompressible fluid between two plane surfaces. I used channelFlow for the mesh, but have to change the 0...
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