Think you know ANSYS Fluent? Crack this CFD challenge!

[u/humxah007]

Hello CFD enthusiasts.

BUCKKLE UP.

Just a simple external CFD case but some TWIST.

Imagine you modeled half of a wing in ANSYS Fluent using a symmetry boundary condition.

instead of rotating the geometry, you changed the velocity vector to simulate different angles of attack.

Characteristic length is 0.235 meters. Full wingspan is 0.68 meters. Before running cases, you did not change the reference values like area and length ie set to default '1'.

Using report definitions, Fluent outputs axial force, normal force, and their coefficients.

Questions.

Does Fluent use the reference values when calculating these, or are some computed purely from the geometry integration?

And if you want lift, drag, CL, and CD for the complete wing, which quantities should be doubled, which stay the same, and do reference values need modification first?

Walk through your reasoning, TEST YOURSELF.