In order to carry out an experimental investigation on control of flow over airfoil, two forms of the Gurney flaps and one form of the vortex generator (VG) are designed and wind tunnel test is carried out combining the Gurney flaps and VG. Comparative study is performed for different scenarios such as clean airfoil, clean airfoil with Gurney flap, clean airfoil with VG and clean airfoil with both Gurney flap and VG. The results show that the lift at linear regime with the same angle of attack is greatly increased by using a Gurney flap, and the drag increases; the stall performance is remarkably improved by using VG, and the drag decreases a lot; the lifts at both linear and stall regimes are improved by using combined Gurney flap and VG, and drag is slightly increased at linear regime and greatly reduced at stall regime. In a word, the proper combination of Gurney flap and VG can result in remarkable improvement of aerodynamic performance of an airfoil, and it is an ideal combinational control style.
HAO Lishu, QIAO Zhide, SONG Wenping
. Experimental Research on Control Flow over Airfoil Based on Vortex Generator and Gurney Flap[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011
, 32(8)
: 1429
-1434
.
DOI: CNKI:11-1929/V.20110328.1427.003
[1] Taylor H D. The elimination of diffuser separation by vortex generators. United Aircraft Corporation Report, R-4012-3, 1947.
[2] Lin J C. Control of turbulent boundary-layer separation using micro-vortex generators.AIAA-1999-3404, 1999.
[3] Amith S, Evan C, Lance W T. Effects of vortex generators on an airfoil at low Reynolds numbers[J]. Journal of Aircraft, 2009, 46(1): 116-122.
[4] Liebeck R H. Laminar separation bubbles and airfoil design at low Reynolds numbers. AIAA-1992-2735, 1992.
[5] Lin J C. Review of research on low-profile vortex generators to control boundary-layer separation[J]. Progress in Aerospace Sciences, 2002, 38(4-5): 389-420.
[6] 倪亚琴. 涡流发生器研制及其对边界层的影响研究[J]. 空气动力学学报, 1995, 13(1): 110-116. Ni Yaqin. Development of the vortex generator and study on the effect of vortex generator on boundary layer[J]. Acta Aerodynamica Sinica, 1995, 13(1): 110-116. (in Chinese)
[7] 张进, 张彬乾, 阎文成, 等. 微型涡流发生器控制超临界翼型边界层分离实验研究[J]. 实验流体力学, 2005, 19(3): 58-61. Zhang Jin, Zhang Binqian, Yan Wencheng, et al. Investigation of boundary layer separation control for supercritical airfoil using micro vortex generator[J]. Journal of Experiments in Fluid Mechanics, 2005, 19(3): 58-61. (in Chinese)
[8] 刘刚, 刘伟, 牟斌, 等. 涡流发生器数值计算方法研究[J]. 空气动力学学报, 2007, 25(2): 241-244. Liu Gang, Liu Wei, Mou Bing, et al. CFD numerical simulation investigation of vortex generators[J]. Acta Aerodynamica Sinica, 2007, 25(2): 241-244. (in Chinese)
[9] Liebeck R H. Design of subsonic airfoils for high lift [J]. Journal of Aircraft, 1978, 5(9): 547- 561.
[10] Giguere P, Lemay J, Dumas G. Gurney flap effects and scaling for low-speed airfoils. AIAA-1995-1881, 1995.
[11] Bloy A W. Enhanced airfoil performance using trailing edge flaps [J]. Journal of Aircraft, 1997, 34(4): 569-571.
[12] 李亚臣, 王晋军, 张攀峰. 平板/锯齿型Gurney襟翼对NACA0012翼型增升实验研究[J]. 航空学报, 2003, 24(2): 119-223. Li Yachen, Wang Jinjun, Zhang Panfeng. Experimental investigation of lift enhancement on a NACA0012 airfoil using plate/serrated Gurney flaps[J]. Acta Aeronautica et Astronautica Sinica, 2003, 24(2): 119-223. (in Chinese)
[13] 沈遐龄, 万周迎, 高歌. 锯齿形格尼襟翼气动性能的实验研究[J]. 北京航空航天大学学报, 2003, 29(3): 202-204. Shen Xialing, Wan Zhouying, Gao Ge. Experimental investigation on aerodynamic performance of serrated Gurney flap[J]. Journal of Beijing University of Aeronautics and Astronautics, 2003, 29(3): 202-204. (in Chinese)
[14] Deman T, Earl H D. Aerodynamic loading for an airfoil with an oscillating Gurney flap[J]. Journal of Aircraft, 2007, 44(4): 1245-1257.
[15] 申振华, 夏商周, 桂巧昳, 等. 带Gurney襟翼翼型改型的气动性能的数值研究[J]. 太阳能学报, 2007. 28(9): 988-991. Shen Zhenhua, Xia Shangzhou, Gui Qiaoyi, et al. Numerical study of aerodynamic characteristics of modified airfoil with Gurney flap[J]. Acta Energiae Solaris Sinica, 2007, 28(9): 988-991. (in Chinese)
[16] Wang J J, Li Y C, Choi K S: Gurney flap—lift-enhancement, mechanisms and applications[J]. Progress in Aerospace Sciences, 2008, 44(1): 22-47.
[17] Lee T. Aerodynamic characteristics of airfoil with perforated Gurney-type flaps[J]. Journal of Aircraft, 2009, 46(2): 542-548.
[18] 张攀峰, 陈迎春, 王晋军, 等. 超临界翼型Gurney襟翼增升技术实验研究[J]. 实验流体力学, 2010. 24(4): 17-20. Zhang Panfeng, Chen Yingchun, Wang Jinjun, et al. Experimental study on lift enhancement of supercritical airfoil in subsonic by Gurrney flap[J]. Journal of Experiments in Fluid Mechanics, 2010, 24 (4): 17-20. (in Chinese)
[19] 焦予秦, 张彬乾, 金承信, 等. 翼型气动力直接测量风洞试验技术探索[J]. 实验流体力学, 2005, 19(2): 40-44. Jiao Yuqin, Zhang Binqian, Jin Chengxin, et al. Experimental technique on direct measuring of aerodynamic forces of airfoil[J]. Journal of Experiments in Fluid Mechanics, 2005, 19(2): 40-44. (in Chinese)
CJA