徐征,刘日,王天昊,等. 仿生鲨鱼皮复合微纳减风阻结构的仿真与制备[J]. 实验流体力学,2022,36(X):1-8. DOI: 10.11729/syltlx20220002
引用本文: 徐征,刘日,王天昊,等. 仿生鲨鱼皮复合微纳减风阻结构的仿真与制备[J]. 实验流体力学,2022,36(X):1-8. DOI: 10.11729/syltlx20220002
XU Z,LIU R,WANG T H,et al. Simulation and fabrication of bionic sharkskin composite micro-nano wind resistance reduction structure[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-8.. DOI: 10.11729/syltlx20220002
Citation: XU Z,LIU R,WANG T H,et al. Simulation and fabrication of bionic sharkskin composite micro-nano wind resistance reduction structure[J]. Journal of Experiments in Fluid Mechanics, 2022,36(X):1-8.. DOI: 10.11729/syltlx20220002

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 sharkskin composite micro-nano wind resistance reduction structure

  • 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。为提升降低风阻效果,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仿真以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。采用仿真模拟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%。

     

    Abstract: The combination of bionics and drag reduction technology has opened up an important research direction in the field of drag reduction, and has made a significant breakthrough. For better implementation to reduce the wind resistance effect, this paper studies the composite micro-nano drag reduction structure, according to the principle of bionics, through CFD simulation combined with the laser micro-nano fabrication technology. A combined model of drag reduction structure wad established. The flight vehicle air sensor head surface with bionic sharkskin composite micro-nano structures was manufactured by laser interfernce scanning on the basis of the bionic sharkskin scale structures, to further improve the drag reduction performance. Through the parallel simulation and wind tunnel test, the drag reduction mechanism was theoretically analyzed, and the composite structures were manufactured with a drag reduction rate of up to 10.3%.

     

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