Learning Forum

[venkyvenkatesh374]

Dear All., Basically am working on a project determining drag and lift coefficient of an aerfoil at different angle of attacks. 

One way to change angle is by giving x and y components on velocity at inlets. 

 Other way is to rotate the coordinate frame to the desired angle, and providing velocity normal to boundary. Am able to create a refrence frame at desired angle, but dont know how/where to set this frame to solve the case. by default fluent is considering global reference frame.  ( IN CFX its easy, theres an option to set user defined frame to solve case).

Please help me to figure this out.  enclosed snip of a new coordinate frame created.

 

[Rob]

Doesn't look like it. I'd be having a very careful look at the mesh too. 

[venkyvenkatesh374]

Hello., any replies to the above doubts.??

[Rob]

Yes. 

[venkyvenkatesh374]

can yu explain how to set a new coordinate frame to solve the case sir.

[Rob]

It doesn't look like you can, hence my comment.