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Multizone Meshing
5 Attachment(s)
Dear:
I have made a multi-zone mesh in ICEM around a cylindrical body with a blunt nose. I want a butterfly mesh at the surface of the far-field region (front and back) as shown in figure 5 and 6. Attachment 11456 Attachment 11455 Initially, I made a mesh as shown in figures 1a, 2a, and the cut plane at Z=0 in figure 3a. Attachment 11457 Attachment 11458 Attachment 11459 |
5 Attachment(s)
Continuity of previous thread:
To make the butterfly mesh at the base of far-field I split O-block at that face, that deteriorate my mesh (see figures 1, 2 and 3). Attachment 11460 Attachment 11461 Attachment 11462 Tell me how can I make the butterfly mesh on the body nose and base and similarly on the far-filed downstream and upstream region, as I showed in figures 5 and 6 (in first post). Attachment 11464 I also need to have a wake behind the body like in figure 4. Attachment 11463 |
Any one can help me?
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Sure, but not with MultiZone...
Perhaps you should start with regular hexa blocking as the first step... Initialize blocking, then split for the semi-circular portion of the far field and then use split blocks => Ogrid... Select the blocks and select the one face at the outlet of the FF. Apply... THis will give you your nice outer mesh... You can keep splitting to get a fully hexa model or you could convert the inner block to "free" and proceed with Multizone... |
I should say that if you want to start with Multizone, it may be best to subdivide your surfaces as you like before initializing the 2D blocking...
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Quote:
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Multizone starts with an operation to extract surface blocking from the surfaces... Surfaces with 4 corners (not necessarily 4 sides) get mapped. Surfaces with 3 corners get mapped with a quarter Ogrid... Other numbers of corners may get a free face.
Since his Far field has a round outlet, it gets a free surface. If he wants it some other way, he could "draw" curves on it and then build topo so the drawn lines will segment the surface. Then the surface blocking will give that configuration... Its not what I would do (I would do top down), but it would work... |
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