How to determine the direction of cell face vectors on processor patches

sebastian_vogl · October 26, 2009, 13:10

Hello Dear Foamers,

I would like to know how I can determine the direction of cell face vectors of processor patches. To put it in other words: When I have got a mesh, which is devided into processorPatches as I run the case in parallel, and a cell face which lies on such a processorPatch and therefore separates two "processorAreas", how do I know to which cell (the one of processor 1 or the neighbouring one of processor 2) does the cell face vector point?
For the internal field I can get owner cell and neighbour cell of that face, get the cell label of each cell and then I know that the cell face vector points in the direction of the cell with the larger cell label.
It is also clear with wallPatches as the vector points away from the geometry.
But what about processorPatches?

I would be very grateful, if you could help me on this.

I thank you in advance for your time and effort!

All the best,
Sebastian Vogl

ripperjack · October 11, 2016, 14:17

Hi Sebastian,

I know it is a really old post, but did you manage to solve this problem?

Regards,
Jack

October 26, 2009, 13:10	How to determine the direction of cell face vectors on processor patches	#1
sebastian_vogl Member Sebastian Vogl Join Date: Mar 2009 Location: Munich, Germany Posts: 62 Rep Power: 17	Hello Dear Foamers, I would like to know how I can determine the direction of cell face vectors of processor patches. To put it in other words: When I have got a mesh, which is devided into processorPatches as I run the case in parallel, and a cell face which lies on such a processorPatch and therefore separates two "processorAreas", how do I know to which cell (the one of processor 1 or the neighbouring one of processor 2) does the cell face vector point? For the internal field I can get owner cell and neighbour cell of that face, get the cell label of each cell and then I know that the cell face vector points in the direction of the cell with the larger cell label. It is also clear with wallPatches as the vector points away from the geometry. But what about processorPatches? I would be very grateful, if you could help me on this. I thank you in advance for your time and effort! All the best, Sebastian Vogl

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October 11, 2016, 14:17		#2
ripperjack Member Jack Join Date: Dec 2011 Posts: 94 Rep Power: 15	Hi Sebastian, I know it is a really old post, but did you manage to solve this problem? Regards, Jack