Boundary layer in a pipe
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Hi OpenFOAMer,
I'm actually trying to mesh a cabin for a HVAC problem with the SHM. But after a lot of attempts I don't succed in creating my boundary layer in the entire pipe system. You will find enclosed a cross section of the pipe and a copy of my SHMdict file. You will see that when the curvature of my pipe increase, the BL desappear. If somebody get an idea .... I allready read a lot of topic on the subject but found any explanation. Thanks Clement PHP Code:
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No idea ????
I tried a lot of combination for the parameters and didn't find any solution. Could someone help me ? If you don't have enough information I can give further description of my problem ........
Thanks Clement |
Hi, I've got the same problem. Have you find a solution ?
Daniele |
Looking other threads it seems to be a naming problem, but I already tried several changes in the addLayersControls / layers setup.
Here is my SHMDict: Code:
// Which of the steps to run Daniele |
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After some trial I've got a SHMDict that works creating layers.
Note: maybe it was just me that checked the mesh in Parafoam looking just at inlet surface (without cutting the pipe#. I was expecting a layering on this surface too. The problem now is on the terminal surfaces. The layers are mergin all togheter in a single cell #see picture). I red that featureAngle can modify this behavior. I'll try it but... Any hint ? |
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Using that mesh give me a problem in solving an Interfoam laminar case.
I don't know whether continue this thread here or move into the solvers forum. Anyway, as you can see in the pictures, the irregular mesh causes some high pressure spots. The simulation is still going, no crash at the moment. Any hint how to improve the mesh ? Daniele |
I hopefully found a solution at http://www.cfd-online.com/Forums/ope...tlet-pipe.html
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