Experimental study on the effect of angle of attack on airfoil boundary layer

HAO Dongzhen; JIANG Nan; TANG Zhanqi; MA Xingyu

doi:10.11729/syltlx20210117

Volume 37 Issue 2

Apr. 2023

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Journal of Experiments in Fluid Mechanics > 2023 > 37(2): 16-24. > DOI: 10.11729/syltlx20210117

HAO D Z, JIANG N, TANG Z Q, et al. Experimental study on the effect of angle of attack on airfoil boundary layer[J]. Journal of Experiments in Fluid Mechanics, 2023, 37(2): 16-24. DOI: 10.11729/syltlx20210117

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Experimental study on the effect of angle of attack on airfoil boundary layer

1.
School of Mechanical Engineering, Tianjin University, Tianjin　300354, China
2.
Tianjin Key Laboratory of Modern Engineering Mechanics, Tianjin　300354, China

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Received Date: September 02, 2021
Revised Date: November 18, 2021
Accepted Date: November 21, 2021

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Abstract

Abstract

In order to deeply understand the influence of the angle of attack on the airfoil boundary layer, a TR–PIV experimental study on the SD7003 airfoil is carried out. The distributions of statistics such as the average velocity of the airfoil suction surface and the Reynolds shear stress under the working conditions of the angle of attack α = 4°, 6° and 8° are compared. Proper orthogonal decomposition (POD) method is adopted for analysis of the experimental data. The flow structure in each mode and the frequency spectrum characteristics of the modes under different working conditions are analyzed in detail. The study finds that: with the increase of the angle of attack, the position of the separation bubble moves to the leading edge of the airfoil, and the thickness of the separation bubble increases; there is intensive shear motion inside the separation bubble and near the reattachment point; there are alternating positive and negative vortex structures near the reattachment point, and the vortex structures change continuously with the development of the boundary layer; the energy of each mode of POD decomposition is related to the scale of the structure contained and the mode frequency; with the increase of the angle of attack, the scale of the flow structures in the flow field increases, and the frequency domain distribution of flow field energy shifts from high frequency to low frequency.
- airfoil,
- boundary layer,
- PIV,
- transition,
- flow structure,
- proper orthogonal decomposition

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References (21)

References

[1]	李锋, 白鹏, 石文, 等. 微型飞行器低雷诺数空气动力学[J]. 力学进展, 2007, 37(2): 257–268. DOI: 10.3321/j.issn:1000-0992.2007.02.009 LI F, BAI P, SHI W, et al. Low Reynolds number aerodynamics of micro air vehicles[J]. Advances in Mecha-nics, 2007, 37(2): 257–268. doi: 10.3321/j.issn:1000-0992.2007.02.009
[2]	LIN J C M, PAULEY L L. Low-Reynolds-number separation on an airfoil[J]. AIAA Journal, 1996, 34(8): 1570–1577. doi: 10.2514/3.13273
[3]	LISSAMAN P S. Low-Reynolds-number airfoils[J]. Annual Review of Fluid Mechanics, 1983, 15(1): 223–239. doi: 10.1146/annurev.fl.15.010183.001255
[4]	HORTON H P. Laminar separation bubbles in two and three dimensional incompressible flow[D]. London: Queen Mary University of London, 1968
[5]	ALAM M, SANDHAM N D. Direct numerical simulation of ‘short’ laminar separation bubbles with turbulent reattach-ment[J]. Journal of Fluid Mechanics, 2000, 410: 1–28. doi: 10.1017/s0022112099008976
[6]	SELIG M, GUGLIELMO J, BROERN A, et al. Experiments on airfoils at low Reynolds numbers[C]//Proc of the 34th Aerospace Sciences Meeting and Exhibit. 1996. doi: 10.2514/6.1996-62
[7]	BREHM C, MACK S, GROSS A, et al. Investigations of an airfoil at low Reynolds number conditions[C]//Proc of the 4th Flow Control Conference. 2008. doi: 10.2514/6.2008-3765
[8]	GROSS A, FASEL H. Numerical investigation of separation for airfoils at low Reynolds numbers[C]//Proc of the 40th Fluid Dynamics Conference and Exhibit. 2010. doi: 10.2514/6.2010-4736
[9]	白鹏, 李锋, 詹慧玲, 等. 翼型低Re数小攻角非线性非定常层流分离现象研究[J]. 中国科学 (物理学力学天文学), 2015, 45(2): 41–52. DOI: 10.1360/sspma2014-00212 BAI P, LI F, ZHAN H L, et al. Study about the non-linear and unsteady laminar separation phenomena around the airfoil at low Reynolds number with low incidence[J]. Scientia Sinica Physica, Mechanica & Astronomica, 2015, 45(2): 41–52. doi: 10.1360/sspma2014-00212
[10]	ZHOU Y, WANG Z J. Implicit large eddy simulation of low Reynolds number transitional flow over a wing using high-order spectral difference method[C]//Proc of the 40th Fluid Dynamics Conference and Exhibit. 2010. doi: 10.2514/6.2010-4442
[11]	BURGMANN S, BRÜCKER C, SCHRÖDER W. Scanning PIV measurements of a laminar separation bubble[J]. Experiments in Fluids, 2006, 41(2): 319–326. doi: 10.1007/s00348-006-0153-6
[12]	BURGMANN S, DANNEMANN J, SCHRÖDER W. Time-resolved and volumetric PIV measurements of a transitional separation bubble on an SD7003 airfoil[J]. Experiments in Fluids, 2008, 44(4): 609–622. doi: 10.1007/s00348-007-0421-0
[13]	OL M, MCCAULIFFE B, HANFF E, et al. Comparison of laminar separation bubble measurements on a low Reynolds number airfoil in three facilities[C]//Proc of the 35th AIAA Fluid Dynamics Conference and Exhibit. 2005. doi: 10.2514/6.2005-5149
[14]	朱志斌, 刘强, 白鹏. 低雷诺数翼型层流分离现象大涡模拟方法[J]. 空气动力学学报, 2019, 37(6): 915–923. DOI: 10.7638/kqdlxxb-2018.0025 ZHU Z B, LIU Q, BAI P. Large eddy simulation method for the laminar separation phenomenon on low Reynolds number airfoils[J]. Acta Aerodynamica Sinica, 2019, 37(6): 915–923. doi: 10.7638/kqdlxxb-2018.0025
[15]	朱志斌, 尚庆, 白鹏, 等. 翼型低雷诺数层流分离现象随雷诺数的演化特征[J]. 航空学报, 2019, 40(5): 122528. DOI: 10.7527/S1000-6893.2018.22528 ZHU Z B, SHANG Q, BAI P, et al. Evolution of laminar separation phenomenon on low Reynolds number airfoil at different Reynolds numbers[J]. Acta Aeronautica et Astronautica Sinica, 2019, 40(5): 122528. doi: 10.7527/S1000-6893.2018.22528
[16]	ZHOU Y, WANG Z J. Effects of surface roughness on separated and transitional flows over a wing[J]. AIAA Journal, 2012, 50(3): 593–609. doi: 10.2514/1.j051237
[17]	KAMARI D, TADJFAR M, MADADI A. Optimization of SD7003 airfoil performance using TBL and CBL at low Reynolds numbers[J]. Aerospace Science and Technology, 2018, 79: 199–211. doi: 10.1016/j.ast.2018.05.049
[18]	朱玉杰, 孙振生, 张炜, 等. 低Reynolds数翼型绕流主动控制技术[J]. 气体物理, 2017, 2(6): 18–27. DOI: 10.19527/j.cnki.2096-1642.2017.06.003 ZHU Y J, SUN Z S, ZHANG W, et al. Active control of low Reynolds number airfoil flow by implicit large eddy simulation[J]. Physics of Gases, 2017, 2(6): 18–27. doi: 10.19527/j.cnki.2096-1642.2017.06.003
[19]	LUMLEY J L. The structure of inhomogeneous turbu-lence[J]. Atmospheric Turbulence and Radio Wave Propa-gation, 1967: 166–178. doi: 10.1007/BF00271656
[20]	BERKOOZ G, HOLMES P, LUMLEY J L. The proper orthogonal decomposition in the analysis of turbulent flows[J]. Annual Review of Fluid Mechanics, 1993, 25(1): 539–575. doi: 10.1146/annurev.fl.25.010193.002543
[21]	SIROVICH L. Turbulence and the dynamics of coherent structures. I. Coherent structures[J]. Quarterly of Applied Mathematics, 1987, 45(3): 561–571. doi: 10.1090/qam/910462

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