[LeftCoefficient]

Hello, I just started a VAWT study and I'm trying to check my experimental results with a simulation. However, for that, first I need to hook a UDF in Fluent (v. 17.2) to define the experimental NACA profiles trajectory, and I don´t know how write that function, although I know a have to use a DEFINE_ZONE_MOTION function.

Can you help me, please? I only want a generic written UDF function for this kind of simulations.

In the case, the profile is rotating in a relative reference system, due to I have set four cell zones: the VAWT rotor and NACA profiles rotating inside rotor (three profiles).

Thanks in advance!