I am currently working on my first RC plane project, and have just begun using xflr5. After reading the section explaining the NCrit and forced trip location parameters from this document http://web.mit.edu/drela/Public/web/xfoil/xfoil_doc.txt, I'm wondering if and when it is necessary to change the forced trip location values. The document explains what NCrit values are appropriate, but I'm still a little confused as to when the forced trip locations must be considered.
Thanks,
Daniel B.
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Hello,
I am currently working on my first RC plane project, and have just begun using xflr5. After reading the section explaining the NCrit and forced trip location parameters from this document http://web.mit.edu/drela/Public/web/xfoil/xfoil_doc.txt, I'm wondering if and when it is necessary to change the forced trip location values. The document explains what NCrit values are appropriate, but I'm still a little confused as to when the forced trip locations must be considered.
Thanks,
On the matter of forced and free transitions, I tried to explain things here.
https://www.youtube.com/watch?v=C9RDw9o-Oig
There is also this highly instructive experiment by Matthieu Scherrer made back when he was a student. No better example of forced transition. http://scherrer.pagesperso-orange.fr/matthieu/aero/nimbus4e.html