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Coefficient of lift for Simple Airfoil

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Old   May 15, 2017, 03:34
Unhappy Coefficient of lift for Simple Airfoil
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Paritosh
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Hi..
I'm doing a cfd analysis of a 3d airfoil under a specific inlet velocity via fluent.
I did the simulation for two different airfoils the only difference being that one airfoil is geometrically scaled by a factor of 100. But the coefficient of lifts of both the models are different by an order of e05, with the upscaled airfoil having a larger lift coeff. The wind speed, parameters, airfoil shape are all exactly the same. The only difference is that one is scaled. I don't understand why I'm getting a different lift coefficient. I don't know what i'm doing wrong.
Please Help.
Original(B).jpg
Scaled(D).jpg
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Old   August 9, 2017, 15:26
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Hi Gohan,

Could you find a solution for your problem? Because I have similar problem, and I'm still looking for any reason for what could cause that much difference.
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airfoil 3d, fluent, lift coefficient, workbench 16

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