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Konstantin April 7, 2002 06:26

Node-Based and Cell-Centred Patterns
What deficiency and advantage have node-based and cell-centred patterns for control-volume discretisation of transport equation on unstructured grids ?

FRED_PSU April 8, 2002 14:19

Re: Node-Based and Cell-Centred Patterns
Well, for the same tetrahedral mesh for example, you get to compute the solution at 5 times more points using cell-centered calculations compared to vertex centered methods: more CPU time, more accuracy, more memory requirements,... it depends on what price you want to pay for your runs. With a cell-centered formulation, the control volume is straightforward: the cell volume and faces. Otherwise, you have to define faces that separate nodes, etc... I think CFX5 is node centered for instance...


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