仿生鲨鱼皮复合微纳减风阻结构的仿真与制备  

Simulation and fabrication of bionic sharkskincomposite micro-nano wind resistance reduction structure

作　　者：徐征 刘日 王天昊 迟振东 王作斌[1] 李理[1] XU Zheng;LIU Ri;WANG Tianhao;CHI Zhendong;WANG Zuobin;LI Li(International Research Centre for Nano Handling and Manufacturing of China(CNM),Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]长春理工大学国家纳米操纵与制造国际联合研究中心,长春130022

出　　处：《实验流体力学》2024年第2期107-114,共8页Journal of Experiments in Fluid Mechanics

基　　金：国家重点研发计划项目(2016YFE0112100);科技部“111计划”微纳操纵与制造项目(D17017);吉林省微纳操纵与制造国际科技合作重点联合实验室项目(20190702002GH)。

摘　　要：仿生学与减阻技术的结合,为减阻开辟了重要的研究方向,在航空航天领域有着潜在的发展与应用前景。为提高降低风阻效果,本文对复合微纳减风阻结构进行了研究,基于仿生学原理,采用CFD仿真及激光微纳制造技术,建立了减阻结构组合模型,并在飞行器的大气传感器半球头体模型表面制造仿生鲨鱼皮复合微纳结构,即在仿生鲨鱼皮鳞片结构的基础上,通过激光干涉扫描二级微沟槽,以进一步提升减阻效果。采用CFD仿真与风洞实验相结合的方式,对减阻机理进行理论分析,完成了复合结构的微纳制造,减阻率最高可达10.3%。The combination of bionics and drag reduction technology has opened up animportant research direction in the field of drag reduction,and has made a significantbreakthrough.For better implementation to reduce the wind resistance effect,this paper studiesthe composite micro-nano drag reduction structure,according to the principle of bionics,throughCFD simulation combined with the laser micro-nano fabrication technology.A combined model ofdrag reduction structure wad established.The flight vehicle air sensor head surface with bionicsharkskin composite micro-nano structures was manufactured by laser interference scanning onthe basis of the bionic sharkskin scale structures,to further improve the drag reductionperformance.Through the parallel simulation and wind tunnel test,the drag reductionmechanism was theoretically analyzed,and the composite structures were manufactured with adrag reduction rate of up to 10.3%.

关 键 词：鲨鱼皮 减阻 风洞实验 CFD流场仿真 微纳结构 鳞片 仿生 

分 类 号：O357.5[理学—流体力学]