Water-trapping and drag-reduction effects of fish Ctenopharyngodon idellus scales and their simulations

IMR OpenIR

	Water-trapping and drag-reduction effects of fish Ctenopharyngodon idellus scales and their simulations
其他题名	Water-trapping and drag-reduction effects of fish Ctenopharyngodon idellus scales and their simulations
	Wu LiYan 1; Jiao ZhiBin 1; Song YuQiu 1; Ren WenTao 1; Niu ShiChao 2; Han ZhiWu 2
	2017
发表期刊	SCIENCE CHINA-TECHNOLOGICAL SCIENCES
ISSN	1674-7321
卷号	60 期号:7 页码:1111-1117
摘要	In the last decades, surface drag reduction has been re-emphasized because of its practical values in engineering applications, including vehicles, aircrafts, ships, and fuel pipelines. The bionic study of drag reduction has been attracting scholars' attentions. Here, it was determined that the delicate microstructures on the scales of the fish Ctenopharyngodon idellus exhibit remarkable drag-reduction effect. In addition, the underlying drag-reduction mechanism was carefully investigated. First, exceptional morphologies and structures of the scales were observed and measured using a scanning electron microscope and 3-dimensional (3D) microscope. Then, based on the acquired data, optimized 3D models were created. Next, the mechanism of the water-trapping effect of these structures was analyzed through numerical simulations and theoretical calculations. It was determined that there are many microcrescent units with certain distributions on its surface. In fact, these crescents are effective in generating the "water-trapping" effect and forming a fluid-lubrication film, thus reducing the skin friction drag effectively. Contrasting to a smooth surface, the dynamics finite-element analysis indicated that the maximum drag-reduction rate of a bionic surface is 3.014% at 0.66 m/s flow rate. This study can be used as a reference for an in-depth analysis on the bionic drag reduction of boats, underwater vehicles, and so forth.
其他摘要	In the last decades, surface drag reduction has been re-emphasized because of its practical values in engineering applications, including vehicles, aircrafts, ships, and fuel pipelines. The bionic study of drag reduction has been attracting scholars' attentions. Here, it was determined that the delicate microstructures on the scales of the fish Ctenopharyngodon idellus exhibit remarkable drag-reduction effect. In addition, the underlying drag-reduction mechanism was carefully investigated. First, exceptional morphologies and structures of the scales were observed and measured using a scanning electron microscope and 3-dimensional (3D) microscope. Then, based on the acquired data, optimized 3D models were created. Next, the mechanism of the water-trapping effect of these structures was analyzed through numerical simulations and theoretical calculations. It was determined that there are many microcrescent units with certain distributions on its surface. In fact, these crescents are effective in generating the "water-trapping" effect and forming a fluid-lubrication film, thus reducing the skin friction drag effectively. Contrasting to a smooth surface, the dynamics finite-element analysis indicated that the maximum drag-reduction rate of a bionic surface is 3.014% at 0.66 m/s flow rate. This study can be used as a reference for an in-depth analysis on the bionic drag reduction of boats, underwater vehicles, and so forth.
关键词	NUMERICAL-SIMULATION SHARK SKIN BIONIC JET FLOW SURFACES POLYMERS water trapping structure drag reduction surface fish scales simulations bionic surface and interface
收录类别	CSCD
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Program for Excellent Talents of Liaoning Provincial Committee of Education]
CSCD记录号	CSCD:6041211
引用统计	被引频次：2[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/150851
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.吉林大学
推荐引用方式 GB/T 7714	Wu LiYan,Jiao ZhiBin,Song YuQiu,et al. Water-trapping and drag-reduction effects of fish Ctenopharyngodon idellus scales and their simulations[J]. SCIENCE CHINA-TECHNOLOGICAL SCIENCES,2017,60(7):1111-1117.
APA	Wu LiYan,Jiao ZhiBin,Song YuQiu,Ren WenTao,Niu ShiChao,&Han ZhiWu.(2017).Water-trapping and drag-reduction effects of fish Ctenopharyngodon idellus scales and their simulations.SCIENCE CHINA-TECHNOLOGICAL SCIENCES,60(7),1111-1117.
MLA	Wu LiYan,et al."Water-trapping and drag-reduction effects of fish Ctenopharyngodon idellus scales and their simulations".SCIENCE CHINA-TECHNOLOGICAL SCIENCES 60.7(2017):1111-1117.