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Improvement Drag Coefficient of NACA 0012 by FLUENT

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Old   January 22, 2016, 16:39
Default Improvement Drag Coefficient of NACA 0012 by FLUENT
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ho-con
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Hello,
Now I am simulating 2D-NACA 0012 with 0-degree angle of attack. I get drag coefficient is 10 times higher than the practical result. The simulation is 5e-2 and the practical is 6.7e-3. Do you have any suggestion to improve it? Thanks
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Old   January 23, 2016, 02:11
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Quote:
Originally Posted by hocon View Post
Hello,
Now I am simulating 2D-NACA 0012 with 0-degree angle of attack. I get drag coefficient is 10 times higher than the practical result. The simulation is 5e-2 and the practical is 6.7e-3. Do you have any suggestion to improve it? Thanks
1.make sure about grid independence
2.set references value correctly
3.make sure about turbulent model that choose correctly depend on your simulation
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Old   January 25, 2016, 08:04
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My mesh get very good with skwewness 0.3 and orthogonal Quality 0.6 and 95000 nodes. The lift coefficient is mosly zero but I still cannot get the correct drag coefficent. Do you have any detail suggestion?

Last edited by hocon; January 25, 2016 at 09:51.
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