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Question about Unsteady attached flow aero
Dear David,
I would like to know more the function of “Unsteady Attached Flow Aero” under Aerodynamic Models of the Turbine Definition. Is this function activated for all dynamic stall model for the unsteady BEM case? Please elaborate more if this option is activated. The option of “Unsteady Attached Flow Aero” is not described in your user document manual.
thank you
Chris
Hi Chris,
in the next release, this option will be renamed to “Noncirculatory Aerodynamics.”
It models the influence of the pitch rate on the moment (Cm) coefficient, as well as the influence of the pitch rate and added mass on the lift (Cl) coefficient.
By default, these contributions are now separated from the dynamic stall models, where some DS models did include these contributions. To ensure consistent activation/deactivation of unsteady non-circulatory aerodynamics, the relevant options should be either activated or deactivated, independent of the chosen dynamic stall model.
Best regards,
David
