Experimental Research on Lift up and Drag Reduction Effect of Streamwise Travelling Wave Wall

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Travelling wave wall used for Micro Air Vehicle flow control is studied to find out its drag reduction effect. Aerodynamic characteristics of the airfoil with and without a streamwise travelling wave on its surface are calculated. The interrelationship is also analyzed among lift, drag and ratio of motion phase speed to the external flow velocity. The flexible airfoil that can generate streamwise travelling waves is realized via electromagnetic coil actuation. Thirty-six coils are placed streamwisely under heat shrink film and magnets producing magnetic field are placed under coils. Every single coil is controlled by current to move vertically in harmonic motion with 30 degrees phase difference between adjacent ones. So heat shrink film is actuated, and streamwise travelling wave is generated. Meanwhile, a prototype is designed and tested in wind tunnel. The experimental aerodynamic data proves that streamwise traveling wave airfoil can increase lift and reduce air drag.

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Periodical:

Edited by:

Xiaohao Wang

Pages:

721-726

DOI:

10.4028/www.scientific.net/KEM.483.721

Citation:

F. Tang et al., "Experimental Research on Lift up and Drag Reduction Effect of Streamwise Travelling Wave Wall", Key Engineering Materials, Vol. 483, pp. 721-726, 2011

Online since:

June 2011

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$35.00

[1] YUAN Zhe-jun, XIE Da-gang, HU Zhong-hui, New Developments of MAV Technology, AVIATION PRECISION MANUFACTURING TECHNOLOGY. 41 (2005) 1-3.

[2] C. Grosjean, G.B. Lee, W. Hong, etc., Micro balloon actuators for aerodynamic control, Proceedings of the IEEE Micro Electro Mechanical Systems (1998) 166-171.

[3] Xu YB, Flexible MEMS skin technology for distributed fluidic sensing, California: California Institute of Technology Pasadena (2002).

[4] Martin, C.A., Kudva, J.N., Austin, F., Jardine, A.P., Scherer, L.B., Lockyer, A.J. and Carpenter, B.F., Smart Materials and Structures—Smart Wing Phase 1 Final Report, AFRL-ML-WP-TR-1999-4162, Air Vehicles Directorate,AFRL, Wright-Patterson Air Force Base, OH (1999).

DOI: 10.1117/12.351561

[5] Mehul P. Patel, Zak H. Sowle, Thomas C. Corke, Chuan He, Autonomous Sensing and Control of Wing Stall Using a Smart Plasma Slat, JOURNAL OF AIRCRAFT. 44 (2007) 516~527.

DOI: 10.2514/6.2006-1207

[6] Ma Binghe, Wang Yan, Deng Jinjun, Yuan Weizheng, Jiang Chengyu, Micro Balloon Actuators for Active Flow Control, ACTA AERONAUTICA ET ASTRONAUTICA SINICA. 28 (2007) 1242~1246.

DOI: 10.1007/s00542-011-1394-8

[7] Gao Ronglong, Li Yibin, Application of Plasma to Achieve Flow Active Control, COMPUTER MEASUREMENT & CONTROL. 15 (2007) 474~476.

[8] F. Laadhari, L. Skandaji, R. Morel, Turbulence reduction in a boundary layer by a local spanwise oscillating surface, Phys. Fluids. 6 (1994) 3218~3220.

DOI: 10.1063/1.868052

[9] Kwing-So Choi, Mark Graham, Drag reduction of turbulent pipe flows by circular-wall oscillation, Phys. Fluids. 10 (1998) 7~9.

DOI: 10.1063/1.869538

[10] Lian Shen, Xiang Zhang and Dick K P. Yue, et al, Turbulent flow over a flexible wall undergoing a streamwise travelling wave motion, J. Fluid Mech. 484 (2003) 197–221.

DOI: 10.1017/s0022112003004294

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