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Old   May 6, 2010, 14:11
Question Fluent results
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Arjit Arora
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On analyzing a 3D wing in fluent, it gave me the following results for force
1. Upward for on the top surface of the wing : 111N
2. Upward force on the bottom surface of the wing : -51N

Net result: 60 N lifts!
Why am i getting a negative lift for the lower surface??

Angle of attack = 8degress
Boundary conditions: Velocity inlet at 15m/s, outflow.. wing=wall. other walls = symmetry
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