[akimbrell]

Code used is a recent version of OpenFOAM-1.6-ext.

I observed the following behavior when running a test case in parallel - see attached image. The case is a point vortex with P = 0 boundaries and U boundaries set to zeroGradient. I am running standard icoFoam solver with 3 processors. For discretization schemes I am using the default Gauss linear everywhere except div(phi,U), for that one I use Gauss linearUpwindV Gauss linear. My max Courant number is ~0.3, grid resolution is reasonable.

The quantity shown is vorticity magnitude - you can see that when the scale is minimized, data is not being shared properly across the processor boundaries - they effectively show up in the solution when they should be invisible. I have run this case previously in serial and have not seen anything like this before. Furthermore, most other schemes for the convection term do not show this behavior. I have observed something similar also using SFCDV but it dissipates shortly after initialization.

Is this a known problem with the linearUpwindV scheme? I have also tried pure linearUpwind and did not see this problem at all.

[alberto]

This is typically due to a missing update of the BC's. If you can reproduce it in 2.0.x, please report it as a bug on http://www.openfoam.com/mantisbt/main_page.php .

[david]

http://www.openfoam.org/mantisbt/view.php?id=676

https://github.com/OpenFOAM/OpenFOAM...01782e30bd4291

Regards
David