Learning Forum

[Aero Juan 2024]

Hello everyone! 

I am reaching out to the talented community in regards to Ansys Fluent Yaw Moment studies for an FSAE car. My university has been successful in conducting 2D and 3D simulations in steady-state, however, we have never actually achieved a yaw moment study, which is kind of the whole purpose of aero! I wanted to reach out to the community and ask for some guidance throughout this process. I have tried searching several online sources for more information regarding setting up domains and solver parameters, however have not been successful. I have a good understanding of Ansys Fluent, but just need an extra push from the community. Cheers! The photo added is in reference to what I am looking for :)

[Rob]

Yaw as in off-axis flow? If so, set up the inlet/sides with velocity components & use pressure outlet with backflow from neighbouring cell at the other end. 

[Aero Juan 2024]

Hi Rob, thank you for your answer. Do you have any more information on how I can set up the inlet sides with velocity components that are off axis? Through my simulations in 3D steady state, I understand how to set up the enclosure with appropriate BOIs, then assign the velocity inlet and outlet to the front and back of the enclosure respectively. So how would I make the inlet and outlet's off axis? Would this mean creating an off axis or curved enclosure, and if so how could I do that?

[Rob]

Just switch the velocity from magnitude normal to components. You'll have two inlets with x & y velocity values (z = 0 assuming that's up). On the other two boundaries use pressure outlet.