[planoturk]

Hello friends,

I am working on a number of airfoils from Wortmann FX family.
I performed Xfoil Direct Analysis (Batch Analysis) under the specifications:

Number of Panels: 200
Ncrit: 13 (as for sailplanes)
Max. Iterations: 2.000

My analysis are between 5x10^5 to 3,5x10^6 Reynolds Numbers.
But at some AoA's, the analysis' log file wrote as "unconverged after .... iterations"

How can I make analysis converged these AoA's?

Also I have some questions;

- What it means "Panel Bunching Parameter"? (It have a value of 1 for default)
- What it means Top Side and Bottom Side Refined Area x/c limits ? (These have a value of 1 for default)
- Top transition and bottom transition location?
- And how these values effect the analysis?

If you inform me about these; I will be very thankful.

Best regards,

[sangeet]

Hello,
I think a much better place to ask this question would be at
https://sourceforge.net/p/xflr5/discussion/
There are many experts there and the developer is also very active in the forum.
I hope it helps

[planoturk]

Originally Posted by sangeet

Hello,
I think a much better place to ask this question would be at
https://sourceforge.net/p/xflr5/discussion/
There are many experts there and the developer is also very active in the forum.
I hope it helps

I know, I opened a topic there also but there is no any helpful answers until now