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Disable torque data in FAST

Posted: Tue Sep 10, 2019 4:11 pm
by Mikael.Hill

I’m trying to figure out how to keep my rotor steady at a certain speed in FAST, but I keep experiencing variations.
Is there a quick way or a setting I can adjust to disable simulation data for the aerodynamic / generator torques, so that I can test without their effects?


Re: Disable torque data in FAST

Posted: Wed Sep 11, 2019 6:57 am
by Jason.Jonkman
Dear Mikael,

Disabling the generator degree of freedom (GenDOF) will force the generator to spin at a constant speed regardless of the torques applied. Disabling the drivetrain-torsion DOF (DrTrDOF) will also eliminate the torsional flexibility of the shaft (so if both GenDOF and DrTrDOF = False, the rotor speed will be constant regardless of the torques applied).

Best regards,

Re: Disable torque data in FAST

Posted: Sun Sep 22, 2019 5:03 am
by Mikael.Hill
Thank you for replying, it took me quite a while, but I finally managed to shed some light on it by reading more about it, which finally led me back here and previous posts. Was really driving me nuts for a while there. :lol:
Image Thank you!!