problem regarding validation
 

Hello..
i'm doing simulation on a pleated dragon fly wing Re=10000. My results are not matching with experimental results. the experimental Cl value is 0.27 and mine is coming out to be -0.05. my grid size is 0.0002 and time interval is 0.001.
my inlet conditions are v=1m/s and gauge pressure=0. my reference length is 1m. please me. tell me where i'm going wrong.
Thank you..

Reference length should be the mean chord's length.
Has your problem converged?

Yes Sir it's a 2D airfoil with 1 unit length and my solution is statistically stable now

Statistically now... what? Did you lose interest while typing? ;) :p lol

Which schemes have you employed?
What convergence criteria have you used?

Sir that was just a mistake :)
it's Statistically stationary.
Sir i'm using fractional step with and convergence criteria up to 1e-06 have achieved for velocities and 1e-05 for continuity. square domain of 60c/60c (c=chord length=1) have been used.

What's the angle of attack? Have you analysed the forces in the proper direction?

Yes, Sir my forces are in proper direction. The direction of force normal to the wing is in the upward direction and angle of attack is 0.

Uhm... right now I can't think of something else.. try to reduce your domain though. I think 60c x 60c is too large. Try making it 30c x 30c and improve the mesh as much as possible.

Alright Sir, but size is already too small (2e-04). Do you think that reducing the size furthur will affect my solutions..??
but i'll do whatever you have suggested me Sir. Thanks a lot for entertaining me. Please assist me in the future also, i may need you then.. :)