5 - BasicFlows

5 - BasicFlows - MEM420Aerodynamics Dr.A.Yousuff MEM/Drexel...

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MEM420 Aerodynamics Dr. A. Yousuff MEM/Drexel
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elementary flows uniform flow source sink uniform + source + sink doublet flow (non‐lifting) over a cylinder vortex lifting flow over a cylinder yousuff Aerodynamics 2 2D, incompressible, inviscid, steady flows
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physically possible, incompressible flow uniform flow yousuff Aerodynamics 3 V V i irrotational flow 0 V 0  V cos , sin x r y r in cylindrical coords cos , sin V r V r and orthogonal
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source (sink) flow yousuff Aerodynamics 4 physically possible, incompressible flow except at origin 0 V irrotational flow 0  V
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strength of a source (sink) yousuff Aerodynamics 5 consider a circular contour with radius r , and a disc of unit ‘depth’. Then the volume rate of flow across this contour is constant r circular and constant radial . and orthogonal
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yousuff Aerodynamics 6 Summation of flows Let F 1 and F 2
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