[DombrovschiM]

Hello everyone,

I am trying to analyze a drone propeller with CFX. But i have a problem, what inlet and outlet conditions should I use?

For INLET i used pressure with relative 0 Bar
Same for outlet, the domain is rotating with a given RPM, but the resulted force of the propeller is way to low ( compared with the experimental data of the propeller)

Do you have any idea?

P.S.: I don't wanna use velocity/mass flow inlet because I don't believe this is the way of doing this analysis.

Thank you

[ghorrocks]

What configuration are you trying to model? You set your boundary conditions to match the configuration you are trying to model.

I would guess that a drone is moving forward at some velocity, and that the propeller is reasonably open to the atmosphere (not in a duct or anything). If this is correct then I would use a velocity inlet and a pressure outlet. Why do you "believe" this is not correct?