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-   -   Writing Blockstructed - HexMesher: Create O-Grid. (http://www.cfd-online.com/Forums/main/91766-writing-blockstructed-hexmesher-create-o-grid.html)

zampa August 22, 2011 09:17

Writing Blockstructed - HexMesher: Create O-Grid.
 
Hy Guys.

Im working in my free time on a blockstructed hex-mesher, like the Icem-Block mesher.

I know a little bit of hex-meshing, and thought that it should be possible to write a interactive hex-mesher (Im leaving apart the geo-handling - proyection. I know from others could do that job), and now I am doing this as a hobby. It started some weeks ago, as a general idea, and now its becoming a real form.

In this first release, transfinite interpolation (TFI) will be used. Maybe with edge length weight. A wrote a standard TFI interpolant, and it works well. Edge link, and so on although works. The big rest is to handle the block-data structure.

OK.


The QUESTION is: How would you define the points of an O-Grid?????


To make it easier, think about a block with corner vertexes P0, ..., P7. I want to create a O-Grid with FACES on the face P0, P1, P2, P3 and the face P4, P5, P6, P7. (opposite faces)

How are the 8 O-Grid points defined? Ive got some ideas, but I dont know exactly what Icem does, or how Icem calculate the O-Grid vertexes.

Any idea?

Thanks,
Zampa.


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