Abstract:Here, when a cylindrical shell vibrated continuously in viscous fluid, velocity of viscous fluid and the cylindrical shell’s propulsion speed were studied with the united Lagrangian-Eulerian method.The contact surface conditions were simplified according to adhesion conditions of viscous fluid molecules.Variables after deformation were approximately expressed with their Taylor series expansions before deformation.When Reynolds number Re < 0.1, Navier-Stokes equations were replaced by Stokes ones to study transverse and longitudinal vibrations of the elastic cylindrical shell.The results showed that fluid velocity distribution approaches a thin plate vibration results with increase in cylindrical shell’s radius; the shell’s displacement direction is opposite to the wave’s one during shell having transverse vibration, but their directions are the same during shell having longitudinal vibration; their directions may be the same or opposite during shell having both transverse and longitudinal vibrations.
[1] 刘贵杰, 闫茹, 姚永凯, 李蒙蒙, 张禹. 推进器系统激励下水下航行器结构中功率流分布特性及优化设计研究[J]. 振动与冲击,2014,33(19):74-80.
LIU Gui-jie,YAN Ru, YAO Yong-kai, et al. AUV structure power flow distribution characteristics and hull optimization design under propulsive system excitation[J]. Journal of Vibration and Shock, 2014,33(19):74-80.
[2] 徐晓锋. 仿生鱼游动与运动控制的数值分析技术[D]. 上海:上海交通大学,2011.
XU Xiao-feng. Numerical analytic technique for bionic fish free swimming and motion control[D]. Shanghai:Shanghai Jiao Tong University, 2011.
[3] Lighthill J. Mathematical Biofluiddynamics[M]. SIAM,1975.
[4] Taylor G. Analysis of the swimming of long narrow animals [J]. Proc. R. Soc. Lond. A,1952,214:158-183.
[5] Lighthill J. Note on the swimming of slender fish[J]. Journal of Fluid Mechanics,1960,9:305-317.
[6] Wu T Y. Swimming of a waving plate[J]. Journal of Fluid Mechanics,1961,10:321-344.
[7] Chopra M G. Hydromechanics of lunate-tail swimming propulsion[J]. Journal of Fluid Mechanics,1974,64:375-391.
[8] Triantafyllou M S. Hydrodynamics of fishlike swimming[J]. Annu Rev Fluid Mech,2000,32(1):33-53.
[9] Tian F B, Lu X Y, Luo H. Propulsive performance of a body with a traveling-wave surface[J]. Physical Review E Statistical Nonlinear & Soft Matter Physics, 2012, 86(86): 3-5.
[10] 严宗毅. 低雷诺数流理论[M]. 北京:北京大学出版社, 2002.
YAN Zong-yi. Theory on Low Reynolds Number Hydrodynamics. Beijing, Peking University Press, 2002.
[11] Ильгамов М А. Введение в Нелинейную Гидроупругость [M]. Москва: Изд. Наука, 1991.
Ilgamov М А. Introduction to Nonlinear Elasto- Hydromechanics[M]. Moscow: Science Press, 1991.
[12] 郝亚娟, 石运会. 势流中可渗透圆柱壳的变形与压力分析[J]. 力学季刊, 2016,37 (1):176-183.
HAO Ya-juan,SHI Yun-hui. Analysis of deformation and pressure of porous circular cylinder in potential flow[J]. Chinese Quarterly of Mechanics, 2016,37 (1):176-183.
[13] 郝亚娟,平畔畔. 势流中弹性薄板的变形与应力分析[J]. 力学季刊,2014,35(4):651-657.
HAO Ya-juan,PING Pan-pan. Analysis of deformation and stress of elastic thin plate in potential flow[J]. Chinese Quarterly of Mechanics, 2014,35(4):651-657.
[14] 陈懋章. 粘性流体动力学基础[M]. 北京:高等教育出版社, 2001.
CHEN Mao-zhang. Foundations of Viscous Fluid Dynamics. Beijing, Higher Education Press, 2001.
[15] 上海交通大学船舶制造系编. 流体力学[M]. 北京:科学教育出版社,1961.
Department of Marine Manufacture, Shanghai Jiao Tong University. Fluid Mechanics[M]. Beijing: Science and Education Press,1961.
[16] 王竹溪, 郭敦仁. 特殊函数类[M]. 北京:科学出版社,1979.
WANG Zhu-xi, GUO Dun-ren. Special Functions[M]. Beijing: Science Press,1979.
[17] BLAKE J R. Infinite models for ciliary propulsion[J]. Journal of Fluid Mechanics, 1971, 49(2): 209-222.