[HHOS]

Hello;

I am just trying to understand how OpenFOAM works and I started with the calculation of Forces and Drag and Lift coefficients, which is pretty common thing, I guess.

When I set up a case in Fluent, I plot the drag and lift coefficients, but I "cheat" the software, so to speak, changing the Reference values so that the Coefficient is the same as the force and I can monitor directly the forces easily.

So I tried the same in OpenFOAM, changing the Rho=1, lref=1, Aref=2 and so on, and even if the results are really close regarding the number, the exponent doesn't fit, so I am wondering if I have done some kind of mistake in another simulations... The difference is 1000, so...

What I got:

Cd 9.61567598E-08 Fx 9.598367763E-05
Cl 4.250502218E-10 Fy 4.2428513135E-07


Let's see if someone has ever thought about it