Streamwise vortex generator for separation reduction on wind turbine profile

22nd Fluid Mechanics Conference

物理学;力学

Martinez Suarez, J.^1 ; Flaszyski, P.^1 ; Doerffer, P.^1

Aerodynamics Department, Szewalski Institute of Fluid-Flow Machinery (IMP PAN), 14 Fiszera Street, Gdansk

80-231, Poland^1

关键词: Aero-dynamic performance;    High angles of attack;    Inflow conditions;    Numerical results;    Range of angles of attack;    Streamwise vortices;    Vortex generators;    Wind turbine blades;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/760/1/012018/pdf
DOI  :  10.1088/1742-6596/760/1/012018

学科分类：力学，机械学

来源: IOP

【 摘 要 】

High angles of attack of the wind turbine blades induce severe flow conditions which lead to flow separation and, as the consequence, aerodynamic performance reduction. Implementation of a new type of passive streamwise vortex generator (Rod Vortex Generator - RVG), on a wind turbine profile in order to reduce the flow separation is presented. Numerical model validation is carried out for the S809 aerofoil and a wide range of angles of attack (AoA) employed as reference for flow control cases. Investigation of proposed passive control method involves attached as well as incipient and massive flow separation. A study of chordwise location of RVGs for different inflow conditions is performed. The numerical and experimental results are in good agreement. Obtained numerical results based on the RANS approach reveal a large potential of selected passive devices in reduction of flow separation and increase of aerodynamic performance.