Unsteady Surface Pressures and Airload of a Pitching Airfoil

被引:4
|
作者
Worasinchai, Supakit [1 ]
Ingram, Grant [2 ]
Dominy, Robert [2 ]
机构
[1] Natl Met & Mat Technol Ctr MTEC, 114 Paholyothin Rd, Klongluang 12120, Pathumthani, Thailand
[2] Univ Durham, Sch Engn & Comp Sci, Durham DH1 3HP, England
关键词
Airfoil; Dynamic performance characteristics; Low Reynolds number; Vortex formation;
D O I
10.1016/j.egypro.2013.06.769
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
This paper presents unsteady surface pressure variations of a symmetrical NACA0012 section commonly used on Vertical-axis wind turbine blades. The section was tested at a Reynolds number of 90,000, mean incidence angles of 15 degrees and -15 degrees, and a reduced frequency of 0.20. The experimental results show that the airfoil motion had significant effects on surface pressure distribution over the airfoil, leading to a formation and shedding of an energetic leading edge vortex which strongly affects the overall airload over the incidence range. (C) 2013 The Authors. Published by Elsevier B.V
引用
收藏
页码:407 / 416
页数:10
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