Experimental and numerical investigation of the influence of roughness and turbulence on LUT airfoil performance

作     者：Shoutu Li Ye Li Congxin Yang Xiaobo Zheng Qing Wang Yin Wang Deshun Li Wenrui Hu 

作者机构：School of Energy and Power EngineeringLanzhou University of TechnologyLanzhou 730050China Gansu Provincial Technology Centre for Wind TurbinesLanzhou 730050China Key Laboratory of Fluid Machinery and SystemsLanzhou 730050China Lab of Multiple Function Towing TankSchool of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Ocean EngineeringSchool of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center for Advanced Ship and Deep-Sea ExplorationShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory of Hydrodynamics(Ministry of Education)Shanghai Jiao Tong UniversityShanghai 200240China Institute of MechanicsChinese Academy of SciencesBeijing 100080China 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：2019年第35卷第6期

页      面：1178-1190页

核心收录：

学科分类：08[工学] 0825[工学-航空宇航科学与技术] 

基　　金：This work was supported by the Natural Science Foundation of GANSU(grant 1508RJYA098) National Natural Science Foundation of China(grants 51766009,51761135012,11872248) National Basic Research Program of China(grant 2014CB046201) The authors also thank the people who provided many good suggestions for this paper,and Northwestern Polytechnical University for providing the experimental instruments and wind tunnel 

主　　题：Airfoil Dynamic load Roughness Vertical-axis wind turbines(VAWTs) Wind tunnel experiment 

摘      要：Vertical-axis wind turbines(VAWTs)have been widely used in urban environments,which contain dust and experience strong ***,airfoils for VAWTs in urban environments have received considerably less research attention than those for horizontal-axis wind turbines(HAWTs).In this study,the sensitivity of a new VAWT airfoil developed at the Lanzhou University of Technology(LUT)to roughness was investigated via a wind tunnel *** results show that the LUT airfoil is less sensitive to roughness at a roughness height of0.35 ***,the drag bucket of the LUT airfoil decreases with increasing roughness ***,the loads on the LUT airfoil during dynamic stall were studied at different turbulence intensities using a numerical method at a tip-speed ratio of *** the stall,the turbulence intensity did not considerably affect the normal or tangential force coefficients of the LUT ***,after the stall,the normal force coefficient varied obviously at low turbulence ***,as the turbulence intensity increased,the normal and tangential force coefficients decreased rapidly,particularly in the downwind region of the VAWT.