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getting Positive Cm instead of negative: flow over airfoil

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Old   January 7, 2014, 03:00
Default getting Positive Cm instead of negative: flow over airfoil
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rishad rizwan
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hello,
i'm currently simulating flow over a super critical airfoil with mach number 0.729 and AOA=2.79 degree. Comparing my results with experimental data of AGARD, i found all my result matching except the Cm. It should be -0.09 but every time i'm getting +0.09. Can anyone help me please?

I used S-A model and solver was pressure based.
I need to know the answers urgently....

thanks in advance for your reply.
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coefficient of moment, flow over airfoil, positive cm

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