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detection of flow separation on airfoil

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Old   August 15, 2009, 09:12
Default detection of flow separation on airfoil
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I am simulating flow over a NACA 0018 airfoil at low Re numbers. I have regions on the airfoil with expressly low pressure( bottom of the scale)
Do they signify the separation bubble because I am still seeing pathlines through that region. I have tried simulating at moderate angles of attack so the aforementioned pressure areas cannot signify shock.
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