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shaker November 22, 2011 04:52

help needed for swept back wing simulation
Hi all,

Can anyone tell me how to simulate a swept back wing in 2d process? I found the geometry of swept back airfoil using matlab code,but found absurd result after simulation. The experimental data of naca shows the stall at 34 degree but i got the stall before 20 degree for the airfoil. Is it possible in this way?

truffaldino November 22, 2011 06:47

For incompressible (low speed subsonic) flow you can use XFLR5 (this software applies vortex lattice method in combination with drag polars from 2d sections).

shaker November 28, 2011 05:04

thanks. is it possible in fluent using 2d airfoil?

sail November 28, 2011 16:38

i'm sorry but i might have missed something. what exactly do you mean 2d swept back wing?

as for your last post, yes in fluent it is possible to simulate a 2d profile, but remember that the stall is extreamely hard to catch.

EDIT: ok maybe i got it: you are talking about a profile deformed by the progection on the plane perpendicolar to the sweep.

just remember that a 2d profile assume an inifinte aspect ratio and discrad the 3d effects, wich might be quite significative, both for performance and stall angle, on a real geometry.

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