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Imported geometry beyond bounds and local boundary conditions

Posted by fsantoxfsantox  
Imported geometry beyond bounds and local boundary conditions
February 08, 2018 06:49PM
Hello everyone,

I was trying to understand how external geometry can be used as an input on Palabos and I was using the externalFlowAroundObstacle as a starting point for this. I wanted to simulate a circular duct, similar to a poiseuille flow example but with an imported geometry. So drew the duct on a CAD software and gave it a length slightly lesser than the simulation domain, if I try to have it with the same size or bigger than the domain, I get the following error messages:

Errors
------
Caught exception in process 0. Palabos generic exception:
List of error messages (not chronological):
1) Error treating the geometry in the Guo off-lattice model.
2) Guo off-lattice model could not find an intersection with a triangle.

But once I had the duct half outside the domain by accident and the simulation ran fine, but I can't understand how.

I wanted to do this in order to have the boundary condition completely inside the duct.

Best regards,
Fernando
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