# Difference between structured & unstructured mesh

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 February 20, 2003, 00:10 Difference between structured & unstructured mesh #1 Andrew Guest   Posts: n/a Hi What's the difference between structured mesh and unstructured mesh? Thanks. Andrew

 February 20, 2003, 05:41 Re: Difference between structured & unstructured m #2 Marc Guest   Posts: n/a 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

 February 20, 2003, 09:40 Re: Difference between structured & unstructured m #3 Smith Guest   Posts: n/a Please see this previous posting : http://www.cfd-online.com/Forum/main...cgi?read=12475

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