Learning Forum

[atcfxp]

Hi guys,

I am new to Ansys and I have to change the incidence angle of the inlet flow on a axial turbine. I tried to change the velocity components at the inlet but I don't seem to get the right results. Have you any idea how I can change the incidence angle of the inlet flow correctly?

Thank you in advance!

[Rob]

Can you post what you're seeing, what you set and what you want to see?

[DrAmine]

Are you looking into the velocity vectors?

[atcfxp]

Thank you both for the quick respond. This is where I changed the velocity components. My goal is to get a range of incidence angles of the inlet flow where my pressure drop nearly doesn't change but in my results it doesn't change no matter what incidence angle I use.

[DrAmine]

You can create a local reference frame on the inlet and use it to better provide your velocity components. From you input you are setting the rotation axis to X: is this correct? Based on that input the axial component should point to Global X. And you need to define that at inlet and not in the initialization. What does your Inlet BC look alike?

[DrAmine]

Some Help with Video

[DrAmine]

 ANSYS CFX - Tutorial NACA 0012 with Angle of Attack - Part 5/5 - YouTube

[atcfxp]

Thanks for your help. I have changed the velocity components in the inlet boundary details but now I always get errors running the simulation. In my course we have only used turbogrid, cfx-pre and cfx-post so far so I think it must be possible to do the setup in cfx-pre but I don't know in which section I have to set it.