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- Title
主动式气动滑片对翼型气动及噪声特性影响研究.
- Authors
倪露露; 缪维跑; 李春; 张万福
- Abstract
The dynamic stall phenomenon seriously affects the aerodynamic performance of the wind turbine, while the arrangement of active aerodynamic sliding vanes on the leading edge of the airfoil can effectively improve the stall phenomenon.Therefore, based on NACA0012 airfoil, the impacts of aerodynamic sliding vane on airfoil aerodynamic performance and noise characteristics are studied by the numerical simulation method. The results show that the active aerodynamic sliding vane on the leading edge can effectively improve the aerodynamic performance of the airfoil during its pitch-up process. Compared to the original airfoil, the average lift coefficient of the aerodynamic sliding vane airfoil is increased by 24.2% and the drag coefficient is reduced by 11.7%.During the pitch-up process of airfoil, the aerodynamic sliding vane can inhibit the leading edge separation vortex from moving to the trailing edge, delay the fusion of the leading edge and trailing edge separation vortexes, and prevent the separation vortex from falling off the airfoil surface. The aerodynamic sliding vane does not increase the airfoil noise level, but it can reduce the main frequency of the airfoil trailing edge pressure power spectrum; when the airfoil reduced frequency is changed, the total sound pressure level of the aerodynamic sliding vane airfoil remains the same as the original airfoil.
- Publication
Journal of Engineering for Thermal Energy & Power / Reneng Dongli Gongcheng, 2022, Vol 37, Issue 3, p152
- ISSN
1001-2060
- Publication type
Article
- DOI
10.16146/j.cnki.rndlgc.2022.04.021