KR495: TGrid: What default length should I give initially? How do I determine the sizes on different zones?
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The Default Length is the largest allowable cell length in the Cartesian grid. Depending on the shape and size of the input geometry, T-Grid automatically computes an appropriate value for the Default Length. However, you can also specify the value manually. Sizes are defined on discrete level - For example, If Default Length is 256, Level 1 = 256 Level 2 = Default Length / 2 = 128 Level 3 = Default Length / 2 / 2 = 64 In General, Level N = Default Length / (2(N - 1)) General guidelines ` Min size should be around 2 times smaller than the mesh size you want on extremely important parts. ` It should be 3-4 times smaller than important narrow gap ` Coarsening after wrapping can be used to get the right final size |
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