Investigation of the drag reduction performance of bionic flexible coating

doi:10.1063/5.0016074

CORC > 宁波材料技术与工程研究所 > 中国科学院宁波材料技术与工程研究所 > 2020专题

	Investigation of the drag reduction performance of bionic flexible coating
	Li, Luncao ; Liu, Bing ; Hao, Hanlin ; Li, Longyang ; Zeng, Zhixiang
刊名	PHYSICS OF FLUIDS
	2020
卷号	32 期号:8
关键词	COMPLIANT COATINGS FLOW
DOI	10.1063/5.0016074
英文摘要	The drag is a crucial factor in reducing the speed of movement and increasing unnecessary energy loss. In this work, inspired by dolphins, five bionic flexible coatings with drag reduction performance were designed and manufactured. First and foremost, the mixed solution, composed of the polydimethylsiloxane and ethyl acetate, was sprayed on aluminum disks with a spray gun, and the bionic flexible coatings were obtained by heating the aluminum disks sprayed with the mixed solution. Afterward, the mechanical properties and surface characteristics of the flexible coatings were characterized. The experimental results for the flexible coatings of drag reduction performance were obtained by using the drag force device. Above all, the parametric study focusing on the flexible coating of the mechanical properties affects the station of flow, which is performed to analyze the impact on drag reduction. Selecting the aluminum disk without any coating as a reference, numerical simulation methods were introduced to explore the drag reduction mechanism of the bionic flexible coating. The results evidence that the drag reduction ratio is 21.6% at the rotation velocity 50 rpm. Under the action of frictional resistance, the coating of elastic deformation caused by the viscoelasticity of the coating like the dolphin skin results in a decrease in frictional resistance of the wall.
学科主题	Mechanics ; Physics
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/20613]
专题	2020专题
作者单位	1.Zeng, ZX (corresponding author), Chinese Acad Sci, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Li, LY
推荐引用方式 GB/T 7714	Li, Luncao,Liu, Bing,Hao, Hanlin,et al. Investigation of the drag reduction performance of bionic flexible coating[J]. PHYSICS OF FLUIDS,2020,32(8).
APA	Li, Luncao,Liu, Bing,Hao, Hanlin,Li, Longyang,&Zeng, Zhixiang.(2020).Investigation of the drag reduction performance of bionic flexible coating.PHYSICS OF FLUIDS,32(8).
MLA	Li, Luncao,et al."Investigation of the drag reduction performance of bionic flexible coating".PHYSICS OF FLUIDS 32.8(2020).