Modelling Separated Flows
There exist two very simple classical models for separated flow behind a bluff body - Helmholtz/Kirchhoff and Prandtl/Batchelor. These both have a pleasant simplicity but agreement with experiment is only qualitative. A simple combination of these two is presented for flow down a step which gives better quantitative results. The techniques of thin airfoil theory are applied when the aspect ratio of the separated region is large.
KeywordsShear Layer Separate Region Separate Flow Laminar Boundary Layer Step Height
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