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Old   January 6, 2012, 08:46
Default Low Re foil shaped profile modelling
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Tom
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Hi, I have to do some CFD analysis on the 2D shape seen below. I am interested in the lift and drag coefficients at angles of attack between +/- 6 degrees. I am planning on using ANSYS Fluent to perform this analysis but I have never used Fluent before (or any CFD software) and I think I need help. I tried some simulations on a NACA 0012 profile to compare with data in the book Theory of Wing Sections but the numbers are way off. Does anyone have any suggestions or comments to a new Fluent user?

The reynolds number I am operating at is approximately 425000 (speed of 0.5 mps in water). From what I have been reading on CFD it seems to be very difficult to model boundary layer transition from turbulent to laminar which this foil should be approaching.


Thanks

Tom
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Old   January 6, 2012, 10:51
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Hi,

As a starting point, I would suggest having a go at the Fluent tutorials to get a feel of the interface and what can be achieved with Fluent. That is where I started and I found it quite useful.

Tom.
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Old   January 6, 2012, 13:42
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Thanks, I tried a few tutorials but I am still having problems at low reynolds numbers. Are there any different things that need to be done with the mesh or the viscosity model settings to account for the laminar-turbulent transition?


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