I am running upwind wind turbine model.
No platform - tower is fixed to the ground.
yaw angle is= 0 (both initial and final),
YawDOF = False.
Turbine is parked.
Analysis was performed for two cases
case 1 : BlPitch ( 1,2,3) = 0 means blade chord is parallel to horizontal wind direction. i.e. leading edge faces the wind.
case 2 : BlPitch ( 1,2,3) = 90 means blade chord is perpendicular to horizontal wind direction , i.e. flat side of blade faces the wind
It is expected to get higher value for tower top response for BlPitch =90 when compared with BlPitch = 0. I get exactly opposite. Is there any specific damping routine getting called.
I am running simulation for 50 m/s mean wind speed at hub height of 80 m. ( I have scaled down the blade model from NREL 5MW turbine to a specification of smaller blade model.)
Any input/suggestion would prove of great help.
Student ( Florida State University, Tallahassee)