|January 16, 2017, 17:17||
Skin friction coefficient calculation for a flow over a convex surface
Join Date: Oct 2009
Posts: 243Rep Power: 10
I need to calculate the skin friction factor (C_f) in CFX. The equation for the skin friction coefficient is:
The problem is that since the flow that I am studying is the flow over an airfoil, it is hard to find C_inf and then input that in this equation. I can easily extract shear stress from the results but I do not know how to get C_inf.
C_inf is basically velocity at the edge of the boundary layer and since flow is over a convex surface this value changes form one location to another.
Is there any solution?
Last edited by alinik; January 16, 2017 at 17:17. Reason: forgot to add tags
|January 16, 2017, 22:08||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 13,206Rep Power: 103
Then you need to define a function for C_inf, however that is defined. If it is the velocity at the edge of the boundary layer (or a function of it) then this function will be very difficult to implement in CFD-Post as it does not really have the capabililty to do this. You might have more luck with more powerful post processors like tecplot, ensight or fieldview.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Calculation of drag and lift coefficient in flow around a semi-cylinder shape||Lorenzo C.||FLUENT||0||November 18, 2016 14:47|
|Issues on the simulation of high-speed compressible flow within turbomachinery||dowlee||OpenFOAM Running, Solving & CFD||8||October 25, 2016 19:48|
|Calculate Skin Friction Coefficient in a plate with a roughness pattern||Kyoto||FLUENT||0||August 23, 2013 22:52|
|Skin Friction Coefficient Comparison||twolfe13||Main CFD Forum||1||April 26, 2012 03:48|
|Compute Skin friction coef by hand||Francois||FLUENT||1||February 10, 2006 07:21|