CFD Online Discussion Forums - [mesh manipulation] mergePatchPairs with multiple areas

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mergePatchPairs with multiple areas

Hi together!

I try to use mergePatchPairs to arrange a block-structured grid.
It looks somehow like this:

block2 | block5 |block4
------------------------------------
block1 | oldBlock |block3
-------------(sym.)---------------

The idea is that the blocks 1-5 have a coarser grid.
When I use mergePatchPairs like this

Code:

mergePatchPairs

(

(oldInlet A1East)

(oldOutlet A3West)

(oldTopbottom A5South)

)

I get the following error:

Code:

--> FOAM FATAL ERROR: 

Duplicate point found in cut face. Error in the face cutting algorithm for global face 4(9160 9164 9165 9161) local face 4(13 12 18 19)

Slave size: 25 Master size: 228 index: 10.

I think its because of the edges marked with an "x" in the following picture:

block2 | block5 |block4
----------x--------------x----------
block1 | oldBlock |block3
-------------(sym.)---------------

Can someone help me out? I searched the forum but didnt really find an answer. Is it possible to run mergePatchPairs twice?

Thanks a lot in advance!

Björn

Just in case that somebody has similar problems. My work-around was the following: I merged the oldBlock, block1 and block3 with mergePatchPairs. Then I created a new case with block2, block5 and block4 and used mergeMeshes and stitchMesh to stitch the both cases together. In another case I used AMI boundaries to create the mesh.