6f5caf28d5
The pitzDaily case uses a lot of mesh grading close to walls and the shear layer. Prior to v2.4, blockMesh only permitted grading in one direction within a single block, so the pitzDaily mesh comprised of 13 blocks to accommodate the complex grading pattern. blockMesh has multi-grading that allows users to divide a block in a given direction and apply different grading within each division. The mesh generated with blockMesh using 13 blocks has been replaced with a mesh of 5 blocks that use multi-grading. The new blockMeshDict configuration produces a mesh very similar to the original 13-block mesh.
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About OpenFOAM
OpenFOAM is a free, open source computational fluid dynamics (CFD) software package released by the OpenFOAM Foundation. It has a large user base across most areas of engineering and science, from both commercial and academic organisations. OpenFOAM has an extensive range of features to solve anything from complex fluid flows involving chemical reactions, turbulence and heat transfer, to solid dynamics and electromagnetics.
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