[TOlsen]

Hi everyone,
I'm doing a study on H-type VAWT, I experience a contradict result from FLUENT, the Coefficient of moment generate from monitor is extremely small. I wonder if you guys could give me some advised.

Set up
Chord length is 0.2 meter,
3 Blades
Vinf = 6 m/s
Reference length, radius of turbine = 2;
Reference Area, Diameter of turbine, 4;

Solver
SIMPLE, Least square cell based, PRESTO!, Second order for the rest
Viscosity is standard K-epsilon, with Standard wall function.

The graph for CM is as expect from VAWT, the only thing that not normal is the small magnitude of the CM, after average it in the steady state region , which result in a very small Cp, and even negative when TSR = 4.

Any ideas?

Thanks everyone!

T. Olsen