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-   -   Airfoil design (http://www.cfd-online.com/Forums/fluent/98384-airfoil-design.html)

 sampathevs March 9, 2012 10:29

Airfoil design

how can i control the flow using FLUENT for airfoil. what boundary conditions should i give

 robboflea March 9, 2012 11:52

after 2 seconds spent on google:
http://courses.cit.cornell.edu/fluent/airfoil/step1.htm

Rob

 sampathevs March 9, 2012 12:00

I know how to design a flow over an airfoil.
Im a working on the methods for getting efficient lift. So increasing the flow over the blades and boundary layer control are some methods which inc the aerodynamic lift. I'm asking, how can i implement these methods in my modelling i.e in FLUENT or GAMBIT.!

 robboflea March 9, 2012 12:12

Well it was not clear what you were searching for in your first question. Now it's somewhat clearer but still reeally vague. What do you mean with "increasing the flow over the blades" and how are you thinking to control the boundary layer? By airfoil shaping? By the use of turbulators if needed?

 cfd seeker March 9, 2012 12:14

Search the Cornell University tutorial for meshing and analyzing an aerofoil on google. Its very simple

 sampathevs March 9, 2012 12:19

yea.! method of preventing separation consists of supplying additional energy to the
slow moving air in the boundary layer over the airfoil. This can be done by introducing higher velocity air from inside the body.

But how do i do these all in GAMBIT n FLUENT.!! ????

 robboflea March 9, 2012 12:33

Mesh the airfoil normally but define one portion of the airfoil (the one corresponding to the hole where the air is injected) as a velocity inlet instead of being part of the wall. In Fluent you will be able to set up the velocity magnitude and direction coming from the hole.
I hope that this helps!

Rob

 sampathevs March 9, 2012 12:39

thank u very much.
And one more thing, how can i energize the turbulent boundary layer over an airfoil.??
Thanks in advance. and can u let me know ur email id, so that i can i mail u my work for getting your guidance.!!