Inviscid double wake model for stalled airfoils

The Science of Making Torque from Wind 2014

Marion, L.^1 ; Ramos-García, N.^1 ; Sørensen, J.N.^1

Department of Wind Energy, Fluid Mechanics Section, Technical University of Denmark, DK-2800 Lyngby, Denmark^1

关键词: Aerodynamic forces;    Comparison with experiments;    Constant vorticities;    Range of angles of attack;    Separation points;    Two dimensional panels;    Wind tunnel measurements;    Wind turbine airfoils;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/524/1/012132/pdf
DOI  :  10.1088/1742-6596/524/1/012132

来源: IOP

【 摘 要 】

An inviscid double wake model based on a steady two-dimensional panel method has been developed to predict aerodynamic loads of wind turbine airfoils in the deep stall region. The separated flow is modelled using two constant vorticity sheets which are released at the trailing edge and at the separation point. A calibration of the code through comparison with experiments has been performed using one set of airfoils. A second set of airfoils has been used for the validation of the calibrated model. Predicted aerodynamic forces for a wide range of angles of attack (0 to 90 deg) are in overall good agreement with wind tunnel measurements.