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Forum: OpenFOAM Running, Solving & CFD June 13, 2013, 13:28
Replies: 7
Views: 1,236
Posted By billie
I also played a bit with different schemes and...

I also played a bit with different schemes and found that using leastSquares as gradScheme and corrected as snGradScheme also reduces the imbalance as well as the simulation time. The individual...
Forum: OpenFOAM Running, Solving & CFD May 14, 2013, 10:11
Replies: 7
Views: 1,236
Posted By billie
I found the reason for the extreme mass...

I found the reason for the extreme mass imbalance. If I increase the number of iterations the system balances after a high number of iterations. First of all refining the mesh and improving the mesh...
Forum: OpenFOAM Running, Solving & CFD April 28, 2013, 12:03
Replies: 7
Views: 1,236
Posted By billie
Nobody who can give me any hint here? The...

Nobody who can give me any hint here?

The mass flux on the inlet is 0.5kg/s so it should split to approximately 0.0625kg/s in the eight sub-divisions and 0.25kg/s should reach the two outlets....
Forum: OpenFOAM Running, Solving & CFD April 26, 2013, 03:53
Replies: 7
Views: 1,236
Posted By billie
I forgot to add some information about the...

I forgot to add some information about the boundary conditions applied.

At the inlet there is constant velocity and zeroGradient pressure. For the outflows there is zeroGradient velocity and...
Forum: OpenFOAM Running, Solving & CFD April 25, 2013, 08:55
Replies: 7
Views: 1,236
Posted By billie
Hello Ignacio, thank you for your answer. ...

Hello Ignacio,

thank you for your answer.



This is just a simple model to test the simulation. For the real model it is not possible to mirror the mesh.
Forum: OpenFOAM Running, Solving & CFD April 25, 2013, 06:45
Replies: 7
Views: 1,236
Posted By billie
Adding further information in a second post as...

Adding further information in a second post as only five attachments are allowed per post.

Output from chtMultiRegionSimpleFoam:
21128
This is the output from the first iterations and some at...
Forum: OpenFOAM Running, Solving & CFD April 25, 2013, 06:42
Replies: 7
Views: 1,236
Posted By billie
chtMultiRegionSimpleFoam - Stabilise mass flux in a sub-divided channel

When solving the flow through a sub-divided channel the mass fluxes should be equal in all divisions. However the mass fluxes in the individual splits diverge from the expected distribution after...
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