Abstract
The hybrid vortex method, in which vortex panel method is combined with the viscous-vortex particle method (HPVP), was established to model the wind turbine aerodynamic and relevant numerical procedure program was developed to solve flow equations. The panel method was used to calculate the blade surface vortex sheets and the vortex particle method was employed to simulate the blade wake vortices. As a result of numerical calculations on the flow over a wind turbine, the HPVP method shows significant advantages in accuracy and less computation resource consuming. The validation of the aerodynamic parameters against Phase VI wind turbine experimental data is performed, which shows reasonable agreement.
Highlights
Among various aerodynamic theories of the wind turbine rotor aerodynamic models [1, 2], vortex theories have received wide attention due to their advantages of affordable computational costs and good calculation results
Referring to the introduction in [8], the aerodynamic model of wind turbine blade constructed by vortex method in lift line, lift surface, or panel was used to describe the flow around the blade surface
The aerodynamic performance results of the NREL Phase VI wind turbine is gotten by the measurement in NASA Ames wind tunnel of 24.4 m ∗ 36.6 m
Summary
Among various aerodynamic theories of the wind turbine rotor aerodynamic models [1, 2], vortex theories have received wide attention due to their advantages of affordable computational costs and good calculation results. Referring to the introduction in [8], the aerodynamic model of wind turbine blade constructed by vortex method in lift line, lift surface, or panel was used to describe the flow around the blade surface. Considering the computational cost, many previous studies [15, 16] on free vortex wake methods applied the simplified wake models neglecting the intimal vortex sheet and the root vortices. The neglect of the intimal vortex sheet and its development will result in large errors in the calculation of the blade aerodynamic performance
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