[Ahmed Saeed Mansour]

Hello, If we have a rotating VAWT, and if we selected an airfoil which rotates by a specific speed, and monitor the lift and drag coefficient in Fluent, and the force vector of the lift is at y and its value is 1 like the attached snapshot, will the lift coefficient be accurately calculated during the rotation of the airfoil because the angle is changed and the force vector is still in y direction?
Thanks

[s1291]

Hi Ahmed
Did you figured out the answer for this question?

[Ahmed Saeed Mansour]

Originally Posted by samir1291

Hi Ahmed
Did you figured out the answer for this question?

Yes dear Samir, using sliding mesh technique already tells Fluent that the cells will rotate and at every new position, the new lift and drag forces are calculated according to the new position of the rotor cells, I have showed how to get these curves on my tutorial on youtube ..It is a tutorial about a 3D VAWT, I was asked that question and I found what I have just typed...
Thanks

[s1291]

Thank you dear Ahmed
By the way do you have an idea about the same issue in OpenFOAM. Is it the same?

[Ahmed Saeed Mansour]

Originally Posted by samir1291

Thank you dear Ahmed
By the way do you have an idea about the same issue in OpenFOAM. Is it the same?

You are welcome dear Samir, I am not used to OpenFoam but what I know is if the software uses the same equations and physical principles of CFD, it has to get the same results or approximations, also =, you can check that out in the user guide...
Thanks