Motoring turbine in FAST


I want to simulate a turbine motoring in still air, starting at an initial rpm and ending in a final rpm. Is there a simple way to accomplish this in FAST?


I’ve been able to accomplish this using the UserVSCont routine (modified from Kirk Pierce’s version) with a negative torque in the Spd_trq table, set to give the desired rate of increase.

Hi Scott,

I was going to suggest that you write a simple user-defined routine, but you beat me to it. You could probably also force the desired ramp with the Simple Induction Generator or Thevenin-Equivalent Circuit models.

By the way, have you defended your Ph.D. yet?

Best regards,