中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Experimental and numerical analysis of the effect of vortex generator height on vortex characteristics and airfoil aerodynamic performance

文献类型:期刊论文

AuthorLi, Xinkai1,2,3; Yang, Ke1,2,3,4; Wang, Xiaodong5
SourceEnergies
Issued Date2019-03-01
Volume12Issue:5Pages:19
ISSN1996-1073
KeywordVortex generators Wind turbine Airfoil Aerodynamic performance
DOI10.3390/en12050959
Corresponding AuthorLi, xinkai(lixinkai@iet.cn)
English AbstractTo explore the effect of the height of vortex generators (vgs) on the control effect of boundary-layer flow, the vortex characteristics of a plate and the aerodynamic characteristics of an airfoil for vgs were studied by both wind tunnel experiments and numerical methods. firstly, the ratio of vg height (h) to boundary layer thickness () was studied on a flat plate boundary layer; the values of h are 0.1, 0.2, 0.5, 1.0, 1.5, and 2.0. results show that the concentrated vortex intensity and vg height present a logarithmic relationship, and vortex intensity is proportional to the average kinetic energy of the fluid in the height range of the vg. secondly, the effects of height on the aerodynamic performance of airfoils were studied in a wind tunnel using three vgs with h = 0.66, 1.0, and 1.33. the stall angle of the airfoil with and without vgs is 18 degrees and 8 degrees, respectively, so the vgs increase the stall angle by 10 degrees. the maximum lift coefficient of the airfoil with vgs increases by 48.7% compared with the airfoil without vgs, and the drag coefficient of the airfoil with vgs is 84.9% lower than that of the airfoil without vgs at an angle of attack of 18 degrees. the maximum lift-drag ratio of the airfoil with vgs is lower than that of the airfoil without vgs, so the vgs do not affect the maximum lift-drag ratio of the airfoil. however, a vg does increase the angle of attack of the best lift-drag ratio.
WOS KeywordDECELERATING BOUNDARY-LAYER ; PASSIVE FLOW-CONTROL ; AXIS WIND TURBINE ; OPTIMIZATION ; ENHANCEMENT
WOS Research AreaEnergy & Fuels
WOS SubjectEnergy & Fuels
Language英语
PublisherMDPI
WOS IDWOS:000462646700192
URIhttp://www.irgrid.ac.cn/handle/1471x/2373499
Collection工程热物理研究所
Corresponding AuthorLi, Xinkai
Affiliation1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Key Lab Wind Energy Utilizat, Beijing 100190, Peoples R China
3.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
5.North China Elect Power Univ, Coll Energy Power & Mech Engn, Beijing 102206, Peoples R China
Recommended Citation
GB/T 7714
Li, Xinkai,Yang, Ke,Wang, Xiaodong. Experimental and numerical analysis of the effect of vortex generator height on vortex characteristics and airfoil aerodynamic performance[J]. Energies,2019,12(5):19.
APA Li, Xinkai,Yang, Ke,&Wang, Xiaodong.(2019).Experimental and numerical analysis of the effect of vortex generator height on vortex characteristics and airfoil aerodynamic performance.Energies,12(5),19.
MLA Li, Xinkai,et al."Experimental and numerical analysis of the effect of vortex generator height on vortex characteristics and airfoil aerodynamic performance".Energies 12.5(2019):19.

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来源:工程热物理研究所

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