|March 11, 2011, 06:33||
Looking for ideas to model a wing
Join Date: Jul 2010
Posts: 1Rep Power: 0
I'm working on the modeling of the 737-700 wing actually and I'm looking for some ideas to get different methods.
I want to extract Cl and Cd of that wing. For the moment I work on XFLR5, and I think about using the Prandt's theory to get those coefficients.
|March 11, 2011, 08:00||
Join Date: Mar 2010
Location: Bangalore, India
Posts: 136Rep Power: 8
To my knowledge XFLR5 is based on simpler methods like panel, Lifting line theory. These can give you reliable results of C_L and C_D only in the lower range of angle of attack. For the higher angle of attacks (where there are complicated phenomena like stall, separation, reattachment etc.) you will have to use higher fidelity methods like CFD.
Hope this info is useful.
|March 14, 2011, 06:48||
Join Date: Sep 2010
Posts: 8Rep Power: 8
Unless you're comparing methods I wouldn't expect valid results from XFLR5 (if you're modeling cruise conditions or similar). Maybe Drela's MSES/MISES transonic code would help if you can get hold of it. Or just go for a CFD solution? As cfd_newbie said, at high angles of attack, as well as high mach numbers (M > 0.5 depending on airfoil and aoa), realistic results will deviate from the potential theory behind XLFR5.
Last edited by ChrisDanger; March 14, 2011 at 07:50.
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