I am using Flow Simulation to calculate drag and lift coefficients for different incident angles of a thin wing.
Re is about 2 000 000.
The wing is inclined in the model so that I can simply use Vx=1, Vy=0, Vz=0.
There are arround 30k partial cells on the wing surface and about 300k fluid cells, reffinement is used each travel.
Problem is the Cd Cl values I get are about 30% underestimated (compared to tank trials and fluent simulations, which give about same values than trials).
I tried "thin wall optimisation" but it doesn't improve.
Does anybody have an idea to improve these simulations ?
From the tutorails, I can see that no example is given for that kind of external flow, is it a way to suggest FS doesn't fit this kind of application ?
Tanks for help !