Hi,
Is it necessary to specify BlPitch(1,2,3) and RotSpeed even when I want to run a cut in to cut out DLC 1.2 simulations. Or are those variables only used while I want to run a linearization case.
Best regards,
Karthik
Dear @Karthik.Prakash,
As mentioned before on this forum, we generally recommend that users set good initial conditions for the blade pitch (BlPitch(1-3)) and rotor speed (RotSpeed) in ElastoDyn, based on their expected (mean) values conditioned on the mean wind speed of the simulation at hub height. This is to avoid confusing the controller that is enabled by initializing it in a state that is outside of normal. This recommendation applies to all simulations with an active controller (including DLC 1.2).
Tabulated values of mean rotor speed and mean blade pitch as a function of mean wind speed are available for the various reference wind turbine models provided by NREL, IEA Wind, etc. For a new wind turbine models where this tabulated data are not known, we would recommend generating this table before invoking more extensive analysis by running simulations to steady-state for a range of wind speeds, e.g., by running separate simulations at each wind speed or running a single stepped wind simulation with enough time between steps to identify the steady-state response.
Best regards,