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IEAWindTask37 / IEA-15-240-RWT

15MW reference wind turbine repository developed in conjunction with IEA Wind
Apache License 2.0
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Relationship between blade excel file and airfoil file of OpenFAST #125

Closed Ran-Tu closed 1 year ago

Ran-Tu commented 1 year ago

Dear developers,

I found that the IEA-15-240-RWT_tabular only contains 10 airfoil names. https://github.com/IEAWindTask37/IEA-15-240-RWT/blob/master/Documentation/IEA-15-240-RWT_tabular.xlsx

But in OpenFAST airfoil folders, there are 50 airfoil files. https://github.com/IEAWindTask37/IEA-15-240-RWT/tree/master/OpenFAST/IEA-15-240-RWT/Airfoils

Could you please clarify the relationship between blade excel file and airfoil file of OpenFAST? As I am modelling this 15 MW wind turbine in Simpack, should I use airfoil data in either IEA-15-240-RWT_tabular or OpenFAST airfoil folders?

Regards,

gbarter commented 1 year ago

The 50 OpenFAST airfoil files you mention are spline interpolations of the 10 airfoils listed in the tabular data placed at the spanwise stations listed. The choice between using 10 or 50 (or some other number) is a matter of discretization- typically a user's balance between resolution and computational time.