Roughness for NACA 23012 ???
 

Hello,

I'm studying, with Fluent, a NACA 23012 whose the height is 12 cm and the length is 23cm. I have some difficulties to find the "Roughness Height" and the "Roughness Constant" in books for this type of wing. I dont't know which values I can put in Fluent for these roughnesses. My Reynolds Number is 2000000.

Could you help me to find these values or any address where I could find it, please?

Thank you.

Raph

Re: Roughness for NACA 23012 ???
 

I'm not that familiar with NACA profiles, but aren't that just geometrical descriptions of "standard wings". I guess they are assumed to have smooth surfaces, because otherwise you will have additional parameters besides the geometry. When you want to examine the geometry, you surely don't want to care about roughness, right? Please tell me if I'm wrong.
Regards Marc