Skin friction reduction characteristics of variable ovoid non-smooth surfaces
作者： Xiao-wen Song , Peng-zhe Lin , Rui Liu , Pei Zhou
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摘要: The use of bionic non-smooth surfaces is a popular approach for saving energy because their drag reduction property. Conventional structures include riblets and dimples. Inspired by sand dunes, novel variable ovoid nonsmooth structure proposed in this study. body the dimple was designed based on three size parameters, radius, semimajor, depth, 3D model created UG software. constructed dimples were placed rectangular array bottom square tube model. Following ANSYS meshing, grid imported into FLUENT, where flow characteristics calculated. Results skin friction achieved effect design parameters different obtained orthogonal testing. Various aspects mechanism discussed including distribution velocity vectors, variation boundary layer thickness, pressure distribution.
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Robert D. Bullen, Norman L. McKenzie, The pelage of bats (Chiroptera) and the presence of aerodynamic riblets: the effect on aerodynamic cleanliness. Zoology. ,vol. 111, pp. 279- 286 ,(2008) , 10.1016/J.ZOOL.2007.09.001
Gregory D. Bixler, Bharat Bhushan, Shark skin inspired low-drag microstructured surfaces in closed channel flow Journal of Colloid and Interface Science. ,vol. 393, pp. 384- 396 ,(2013) , 10.1016/J.JCIS.2012.10.061
A. Cezairliyan, A. P. Miiller, Radiance Temperature (at 653 nm) of Tungsten at Its Melting Point International Journal of Thermophysics. ,vol. 3, pp. 89- 99 ,(1982) , 10.1007/BF00503961
Jin Choi, Woo-Pyung Jeon, Haecheon Choi, Mechanism of drag reduction by dimples on a sphere Physics of Fluids. ,vol. 18, pp. 041702- ,(2006) , 10.1063/1.2191848
Andrey V. Boiko, Kwang Hyo Jung, Ho Hwan Chun, Inwon Lee, Effect of riblets on the streaky structures excited by free stream tip vortices in boundary layer Journal of Mechanical Science and Technology. ,vol. 21, pp. 196- 206 ,(2007) , 10.1007/BF03161725
LuQuan Ren, Progress in the bionic study on anti-adhesion and resistance reduction of terrain machines Science in China Series E: Technological Sciences. ,vol. 52, pp. 273- 284 ,(2009) , 10.1007/S11431-009-0042-3
P.R Viswanath, Aircraft viscous drag reduction using riblets Progress in Aerospace Sciences. ,vol. 38, pp. 571- 600 ,(2002) , 10.1016/S0376-0421(02)00048-9
R. I. Bourisli, A. A. Al-Sahhaf, CFD Modeling Of Turbulent Boundary Layer FlowIn Passive Drag-reducing Applications WIT transactions on engineering sciences. ,vol. 59, pp. 79- 90 ,(2008) , 10.2495/AFM080081
Brian Dean, Bharat Bhushan, The effect of riblets in rectangular duct flow Applied Surface Science. ,vol. 258, pp. 3936- 3947 ,(2012) , 10.1016/J.APSUSC.2011.12.067
Xiao-wen Song, Guo-geng Zhang, Yun Wang, Shu-gen Hu, Use of bionic inspired surfaces for aerodynamic drag reduction on motor vehicle body panels Journal of Zhejiang University Science. ,vol. 12, pp. 543- 551 ,(2011) , 10.1631/JZUS.A1000505