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
| Author | Li, Xinkai1,2,3; Yang, Ke1,2,3,4; Wang, Xiaodong5 |
| Source | Energies
 |
| Issued Date | 2019-03-01 |
| Volume | 12Issue:5Pages:19 |
| Keyword | Vortex generators Wind turbine Airfoil Aerodynamic performance |
| ISSN | 1996-1073 |
| DOI | 10.3390/en12050959 |
| Corresponding Author | Li, xinkai(lixinkai@iet.cn) |
| English Abstract | To 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 Keyword | DECELERATING BOUNDARY-LAYER ; PASSIVE FLOW-CONTROL ; AXIS WIND TURBINE ; OPTIMIZATION ; ENHANCEMENT |
| WOS Research Area | Energy & Fuels |
| WOS Subject | Energy & Fuels |
| Language | 英语 |
| WOS ID | WOS:000462646700192 |
| Publisher | MDPI |
| URI | http://www.irgrid.ac.cn/handle/1471x/2373499 |
| Collection | 工程热物理研究所 |
| Corresponding Author | Li, Xinkai |
| Affiliation | 1.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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