Characteristics on drag reduction of bionic jet surface based on earthworm's back orifice jet

Gu Yun-Qing; Mou Jie-Gang; Dai Dong-Shun; Zheng Shui-Hua; Jiang Lan-Fang; Wu Deng-Hao; Ren Yun; Liu Fu-Qing

doi:10.7498/aps.64.024701

Abstract

In order to reduce the drag reduction of the fluid on the solid wall, based on the biology characteristics of earthworm, the earthworm's back orifice jet characteristic is analyzed. The bionic jet surface is modeled by imitating the earthworm's back orifice jet, and the SST k-ω turbulent model is used for numerically simulating the drag reduction characteristics of bionic jet surface, simultaneously the result of the numerical simulation is verified experimentally. On this account, the drag reduction mechanism of bionic jet surface is studied based on the imitation of the earthworm's back orifice jet. The results show that under certain conditions, the drag reduction characteristics of bionic jet surface for imitating the earthworm's back orifice jet are very effective. At the same angle of jet direction, the drag reduction rate increases with the increase of jet velocity; at the same jet speed, the drag reduction rate presents a tendency to increase after the first decrease with increasing the angle of the jet direction. The maximum drag reduction rates obtained from numerical simulation and experimental measurement both on condition that jet velocity is 1 m·s-1 and the angle of jet direction angel is -30°, are 8.69% and 7.86%, respectively. Jet surface changes the original boundary layer structure in smooth wall, thereby effectively controlling the wall boundary layer, and reducing the wall shear stress and also the velocity of the wall boundary layer.

Keywords:

Authors and contacts

1.
College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2.
Zhijiang College, Zhejiang University of Technology, Hangzhou 310024, China
Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 51275102, 51305399, 51476144).

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[37]	Wang J, Zhang C C, Ren L Q, Han Z W 2011 J. China Ordnance 7 59

Cited By

[1]	Ren L Q, Li X J 2013 Sci. China: Technol. Sci. 56 884
[2]	Chirende B, Li J Q, Wen L G, Simalenga T E 2010 Sci. China: Technol. Sci. 53 2960
[3]	Gu Y Q, Zhao G, Zheng J X, Li Z Y, Liu W B, Muhammad F K 2014 Ocean Eng. 81 50
[4]	Koeltzsch K, Dinkelacker A, Grundmann R 2002 Exp. Fluids 33 346
[5]	Huang Q G, Pan G, Song B W 2014 Acta Phys. Sin. 63 054701 (in Chinese) [黄桥高, 潘光, 宋保维 2014 63 054701]
[6]	Ren L Q, Liang Y H 2009 Sci. China E: Technol. Sci. 52 2791
[7]	Wang L, Cai W H, Li F C 2014 Chin. Phys. B 23 034701
[8]	Karthikeyan C, Krishnan R, Princy S A 2008 J. Bionic Eng. 5 25
[9]	Lu Y X 2004 J. Bionic Eng. 1 1
[10]	Ren L Q, Wang S J, Tian X M, Han Z W, Yan L N, Qiu Z M 2007 J. Bionic Eng. 4 33
[11]	Wang B, Wang J D, Chen D R 2014 Acta Phys. Sin. 63 074702 (in Chinese) [王宝, 汪家道, 陈大融 2014 63 074702]
[12]	Lang S S, Geng X G, Zang D Y 2014 Acta Phys. Sin. 63 084704 (in Chinese) [郎莎莎, 耿兴国, 臧渡洋 2014 63 084704]
[13]	Wang Y H, Zhang C C, Wang J, Shi L, Zhang X P, Ren L Q 2012 J. Jilin Univ. Eng. (Tech. Ed.) 42 1442 (in Chinese) [王永华, 张成春, 王晶, 石磊, 张雪鹏, 任露泉 2012 吉林大学学报 (工学版) 42 1442]
[14]	Liu F, Shi W P, Ren L Q 2010 Chin. J. Theor. Appl. Mech. 42 951 (in Chinese) [刘芳, 施卫平, 任露泉 2010 力学学报 42 951]
[15]	Ren L Q, Han Z W, Li J Q, Tong J 2002 J. Terramech. 39 221
[16]	Ren L Q, Han Z W, Li J Q, Tong J 2006 Soil Tillage Res. 85 1
[17]	Gu Y Q, Zhao G, Liu H, Zheng J X, Ru J, Liu M M, Chatto A R, Wang C G 2013 J. Cent. South Univ. 20 3065
[18]	Mezoff S, Papastathis N, Takesian A, Trimmer B A 2004 J. Exp. Biol. 207 3043
[19]	Chernousko F L 2005 Appl. Math. Comput. 164 415
[20]	Kim B, Lee M G, Lee Y P, Kim Y, Lee G 2006 Sens. Actuators A: Phys. 125 429
[21]	Ren L Q 2009 Sci. China E: Technol. Sci. 52 273
[22]	Shelley T Ren L Q, Tong J, Li J Q, Chen B C 2001 J. Agric. Eng. Res. 79 239
[23]	Zu Y Q, Yan Y Y 2006 J. Bionic Eng. 3 179
[24]	Yan Y Y, Zu Y Q, Ren L Q, Li J Q 2007 Proc. Inst. Mech. Eng. Part C: J. Mech. Eng. Sci. 221 1201
[25]	Tong J, Moayad B Z, Ren L Q, Chen B C 2004 Int. Agric. Eng. J. 13 71
[26]	Accoto D, Castrataro P, Dario P 2004 J. Theoret. Biol. 230 49
[27]	Liu G M, Li J Q, Zou M, Li Y W, Tian X M 2008 Trans. Chin. Soc. Agric. Engineer. 24 62 (in Chinese) [刘国敏, 李建桥, 邹猛, 李因武, 田喜梅 2008 农业工程学报 24 62]
[28]	Yan Y Y, Ren L Q, Li J Q 2006 Int. J. Des. Nat. 1 135
[29]	Catalano P, Amato M 2003 Aerosp. Sci. Technol. 7 493
[30]	You Y C, Buanga B, Hannemann V, Ldeke H 2012 Chin. J. Aeronaut 25 325
[31]	Menter F R 1994 AIAA J. 32 1598
[32]	Xiong J B, Koshizuka S, Sakai M 2011 Nucl. Eng. Des. 241 3190
[33]	EÇa L, Hoekstra M 2011 Compu. Fluids 40 299
[34]	Gu Y Q, Zhao G, Zheng J X, Zhang S, Ru J, Liu M M, Yao J J 2012 J. Xi'an Jiaotong Univ. 46 71 (in Chinese) [谷云庆, 赵刚, 郑金兴, 张殊, 汝晶, 刘明明, 姚建均 2012 西安交通大学学报 46 71]
[35]	Gu Y Q, Mou J G, Zhao G, Wang F 2014 J. Huazhong Univ. Sci. Technol. (Nutural Science Edition) 42 22 (in Chinese) [谷云庆, 牟介刚, 赵刚, 王飞 2014 华中科技大学学报(自然科学版) 42 22]
[36]	Gu Y Q, Ru J, Zhao G, Li Z Y, Liu W B, Muhammad F K 2014 Appl. Mech. Mater. 461 725
[37]	Wang J, Zhang C C, Ren L Q, Han Z W 2011 J. China Ordnance 7 59

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Vol. 64, Issue 2 - 2015-01-20

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