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Remarks Concerning Duns and Isaac

If you intent to create a 2D-mesh for the cfd-code duns or isaac you have to watch out that all surfaces are created in the same order. That means that all surfaces must be defined clockwise or counter-clockwise. For isaac they have to be counter-clockwise if you look in z direction. The block-structure can be detected only in this case. You can check the mesh by simply mesh it with shell-elements and display it illuminated. All elements must be either dark or lighted. A later ``qflp'' or ``flip'' command will not cure wrong oriented surfaces since they only change the ``sign'' in their definition and not the basic edge sequence, which is necessary here. See also ''Program Parameters'', ''mesh'', ''send'' with option ''nam''.



root 2011-03-26