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-   -   Difference between structured & unstructured mesh (http://www.cfd-online.com/Forums/main/5766-difference-between-structured-unstructured-mesh.html)

Andrew February 20, 2003 00:10

Difference between structured & unstructured mesh
 
Hi

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

Andrew

Marc February 20, 2003 05:41

Re: Difference between structured & unstructured m
 
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

Smith February 20, 2003 09:40

Re: Difference between structured & unstructured m
 
Please see this previous posting :

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


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