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Difference between structured & unstructured mesh

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Old   February 19, 2003, 23:10
Default Difference between structured & unstructured mesh
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Andrew
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Hi

What's the difference between structured mesh and unstructured mesh? Thanks.

Andrew
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Old   February 20, 2003, 04:41
Default Re: Difference between structured & unstructured m
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Marc
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Hi Andrew,
there are two levels you have to look at, when you want to decide about if a mesh is structured or not. A structured mesh can only be a hexahedron itself, where the parallel edges count the same number of nodes. When you connect these blocks together you get a block-structured mesh, which is still a structured mesh. But the shape is not sufficient for a structured mesh. It is also neccessary to look at the numering of the nodes. A code, which uses a structured mesh, needs special (structured) numbering (CFX-4). A tetrahedron mesh is, in general, unstructured. Nobody would create a structured mesh and then devide the hexas into tets. Did that help you?
Greetings, Marc
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Old   February 20, 2003, 08:40
Default Re: Difference between structured & unstructured m
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Smith
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Please see this previous posting :

http://www.cfd-online.com/Forum/main...cgi?read=12475
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