velocity distribution on an airfoil

Manfred1966 · February 11, 2016, 06:08

Hello guys,

I'm new to CFD and I would like to ask you a basic question on CFD techinques:
when I run a simulation and the program computes the velocity distribution on a the 3D airfoil does it refer to the potential flow theory? i.e. is it the velocity on the edge of the boundary layer? and in case the answer is "yes" how do we deal with separation?

thank you very much guys, sorry for the dumb question, I'm just new at CFD

Ankitvarma1994 · February 11, 2016, 10:42

The computations take into account your boundary layer since even the surface is meshed.

Hamidzoka · February 11, 2016, 12:17

Hi
It definitely depends on the solver type selected. (i.e. viscous or non-viscous).
If the solver is viscous, (in case proper settings for boundary layer mesh is set) it is possible to resolve the boundary layer and therefore separation if any.
If the solver is non-viscous, there will be no boundary layer and it tends to potential theory.

February 11, 2016, 06:08	velocity distribution on an airfoil	#1
Manfred1966 New Member Join Date: Feb 2016 Posts: 1 Rep Power: 0	Hello guys, I'm new to CFD and I would like to ask you a basic question on CFD techinques: when I run a simulation and the program computes the velocity distribution on a the 3D airfoil does it refer to the potential flow theory? i.e. is it the velocity on the edge of the boundary layer? and in case the answer is "yes" how do we deal with separation? thank you very much guys, sorry for the dumb question, I'm just new at CFD

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February 11, 2016, 10:42		#2
Ankitvarma1994 New Member Ankit Varma M Join Date: Feb 2016 Posts: 2 Rep Power: 0	The computations take into account your boundary layer since even the surface is meshed.

February 11, 2016, 12:17		#3
Hamidzoka Senior Member Hamid Zoka Join Date: Nov 2009 Posts: 293 Rep Power: 18	Hi It definitely depends on the solver type selected. (i.e. viscous or non-viscous). If the solver is viscous, (in case proper settings for boundary layer mesh is set) it is possible to resolve the boundary layer and therefore separation if any. If the solver is non-viscous, there will be no boundary layer and it tends to potential theory.