ABSTRACT

In the wave basin test of wind turbines, rotor thrust of a Froude scale model blade is far less than the target value due to reduction of Reynolds number (scale effect). Rotor thrusts of both the prototype and the model are calculated and analyzed by using blade element momentum method (BEM method). In order to alleviate the scaling effect, original airfoil selections of the NREL 5-MW blade cross section (DU series) are replaced by low-Reynolds number airfoil (NACA 4412). On basis of the airfoil-adjusted blade model, this paper further builds an optimization model for the rotor thrust by choosing the blade chord length and twist angle as optimization variables.

Keywords:
basin test, froude, naca 4412, reynolds number, wind energy, airfoil, wind speed, chord length, drag coefficient, compressors engines and turbines
Subjects:
Processing Systems and Design, Facilities and Construction Project Management, Information Management and Systems, Compressors, engines and turbines, Offshore projects planning and execution, Artificial intelligence
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2013. International Society of Offshore and Polar Engineers
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