CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   Lift and Drag on airplane wing (http://www.cfd-online.com/Forums/cfx/23141-lift-drag-airplane-wing.html)

Arj October 5, 2006 07:42

Lift and Drag on airplane wing
 
Hi all,

I am trying to run a simulation on wing designs to work out lift and drag coefficients. I am completely new to ANSYS CFX and Ive imported a wing geometry from solidworks to ANSYS. I am unsure how to go about this. I have made a containing box around my 3D model, what do i do from here, I tried to emulate flow around the wing by copying some parameters from the "flow around the blunt body" tutorial. All i have is some pretty colors around my wing. How can i measure velocities, pressures etc at specific sections of my wing. How do i determine lift and drag (forces?)using CFX and change angles of attack? Any help would be appreciated!


Joe October 5, 2006 08:36

Re: Lift and Drag on airplane wing
 
You're on the right track. Just do all the tutorials and you will be able able to answer virtually all the questions you have posed, yourself.

Until you have a basic understanding of how CFX works any explanations by others wont really sink in.

Arj October 5, 2006 12:09

Re: Lift and Drag on airplane wing
 
cheers for the response! I understand that doing the tutorials is best, and I am endeavouring to do them in the limited time I have. However if possible, I would like a couple of small questions to be answered..Does ANSYS provide features(functions?) to work out lift and drag? Or do I need to manipulate the solved data, and use forces etc. Also how do I incorporate different angles of attack - Do I need to set my fluid flow from a different direction/angle?

Phil October 5, 2006 13:35

Re: Lift and Drag on airplane wing
 
Does ANSYS provide features(functions?) to work out lift and drag?

It provides the XYZ components of force which you can then convert to Cl, Cd etc.

Also how do I incorporate different angles of attack

Change the fluid flow angle or the wing angle. Arrange your fluid BCs accordingly.


Michael B October 6, 2006 04:05

Re: Lift and Drag on airplane wing
 
For a start look at the overview at the end of the solver run.


All times are GMT -4. The time now is 19:00.