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how to calculate recirculation length after square cylinder

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Old   August 16, 2015, 21:47
Default how to calculate recirculation length after square cylinder
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i want to know how to calculate the re circulation length from streamlines drawing

i attached pic for streamlines
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Old   August 17, 2015, 02:30
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Won Sungjin
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When I was undergraduate, I researched about characteristics of square cylinder. And this is the reference paper what I referred.

Flow past a square cylinder with an angle of incidence, 2010, physics of fluid

They set recirculation region as the distance between center of cylinder and near-wake saddle point which is referred by Perry et al. ( It is mentioned in paper)
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