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Unwanted Curved Face

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Old   October 30, 2014, 03:37
Default Unwanted Curved Face
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I am new to CFD and this is my first post, but I think it won´t be my last. The following block is part of a bigger mesh, which is a cylindrical ring with a flat surface.

When I try to mesh this part I get a curved face where it should be flat. At the outer wall it is convex and the inner one is concave. This happens when I define the connection between 4 2, 6 0, 5 3 and 7 1 as "arc". A straight connection results in a flat face.

Please have a look at the blockMeshDict and/ or the picture.

Tanks in advance.
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File Type: jpg Geometry_1.jpg (42.7 KB, 12 views)
Attached Files
File Type: txt Geometry_1_blockMeshDict.txt (1.8 KB, 0 views)
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