Hope you are doing well.
I have some questions please:
—> the frame xt, yt, zt, is the frame located at the tower base right ?
The orientation of xt is always along the wind direction right ? i.e., the direction of xt changes with the yaw of the nacelle right ?
—> In ElastoDyn, RotSpeed is positive means that the rotor turns clockwise i.e. the vector RotSpeed is directed along positive xt axis right ?
—> Also in ElastoDyn, the vector nacelle yaw is directed along positive zt axis right ?
—> If I disable the nacelle yaw degree of freedom, and the nacelle yaw angle is set to 20 degrees. If i want to have a wind which faces the rotor plane, what should i do ? Should i set the HFlowAng to +20 deg ? And could you please clarify, along which axis the vectors HFlowAng and VFlowAng are directed ?