非正弦升沉运动对扑翼自主推进的影响  

Nonsinusoidal motion effect on a self-propelled heaving foil

作　　者：陈晓[1,2] 曹勇[1,2] 黄桥高 潘光[1,2] CHEN Xiao;CAO Yong;HUANG Qiaogao;PAN Guang(School of Marine Science and Technology, Northwestern Polytechnical University, Xi′an 710072, China;Key Laboratory of Unmanned, Underwater Vehicle Technology of Ministry of Industry and Information Technology, Northwestern Polytechnical University, Xi′an 710072, China)

机构地区：[1]西北工业大学航海学院,陕西西安710072 [2]西北工业大学无人水下运载技术工信部重点实验室,陕西西安710072

出　　处：《西北工业大学学报》2022年第2期281-287,共7页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(51879220,52001260);国家重点研究发展计划(2016YFC0301300,2020YFB1313201);中央高校基本科研业务费专项基金(3102019HHZY030019,3102020HHZY030018)资助。

摘　　要：为了研究仿生推进机理以及仿生机器人,弥补非自主推进的局限性,采用数值方法耦合求解流体动力与扑翼运动,建立扑翼-流体耦合的自主推进计算模型,K作为波形调节参数使波形由三角波变为正弦波以及方波,数值模拟了2个频率-升沉幅值组合下非正弦升沉运动的自主推进性能,研究在静水中不同运动波形对自主推进速度、自主推进效率以及流场结构的影响。结果表明非正弦波形对自主推进运动影响很大,随着K的增大即越接近方波,速度振荡越剧烈,起动加速越快,前进位移与平均速度越大;随着K的减小,自主推进效率及能量利用率不断增大,研究结果对仿生水下航行器的设计有一定指导意义。In order to explore the mechanism of bionic propulsion and bionic robots,to make up for the limitations of traditional propulsion with a uniform incoming flow,numerical methods are used to couple fluid dynamics and flapping foil motions,and a flapping-fluid coupling self-propulsion calculation model is established in this paper.K is used as the waveform adjustment parameter to change the waveform from triangle wave to sine wave and square wave.The self-propulsion performances of non-sinusoidal heave motion under two frequency-heaving amplitude combinations are numerically simulated to study the influence of different motion waveforms on self-propulsion velocity,efficiency and flow field structure in still water.The results show that the non-sinusoidal waveform has a great influence on the self-propulsion.With the increase of K,the closer to the square wave,the more violent the speed oscillation,the faster the starting acceleration,the greater the forward displacement and the average speed,as K decreases,self-propulsion efficiency and energy utilization continue to increase.The results of this study have certain guiding significance for the design of bionic underwater vehicles.

关 键 词：扑翼 非正弦运动 自主推进 仿生推进 数值模拟 

分 类 号：TP242[自动化与计算机技术—检测技术与自动化装置] O351.2[自动化与计算机技术—控制科学与工程]