Research on passive control of cloud cavitation based on a bionic fin-fin structure

doi:10.1108/EC-12-2018-0565

	Research on passive control of cloud cavitation based on a bionic fin-fin structure
	Zhao WG(赵伟国)1,2; Wang GP(王桂鹏)1,2
刊名	ENGINEERING COMPUTATIONS
	2019
卷号	37 期号:3 页码:863-880
关键词	Hydrofoil Bionic Cavitation Passive control
ISSN号	0264-4401
DOI	10.1108/EC-12-2018-0565
英文摘要	Purpose The purpose of this paper is to use the NACA 0015 symmetric hydrofoil as the research subject and control cloud cavitation on hydrofoils. Design/methodology/approach Based on observed distribution of caudal fin spines on fish, a bionic structure of fin-like spines is arranged on the hydrofoil suction surface, which maintains the cavitation in a quasi-steady state stage by eliminating the cyclic shedding process of cloud cavitation. Based on the modified shear stress transport k-omega turbulence model and the Zwart-Gerber-Belamri cavitation model, this paper compares and analyzes the NACA 0015 hydrofoil and the bionic NACA 0015 hydrofoil under condition of an angle of attack of 8 degrees and a cavitation number of 0.8. Findings The results show that the average drag of the hydrofoil is reduced but the lift is decreased, and the lift-drag ratio is increased after arranging the bionic structure. The bionic structure can effectively reduce the turbulent kinetic energy and make the flow more stable; it also can effectively control the hydrofoil surface side-entrant jet and the vortex shedding process of the near wall region. Originality/value Based on the above conclusions, the bionic structure of fin-like spines can achieve a significant passive control in the hydrofoil cloud cavitation process.
WOS研究方向	Computer Science ; Engineering ; Mathematics ; Mechanics
语种	英语
出版者	EMERALD GROUP PUBLISHING LTD
WOS记录号	WOS:000524478900003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/118328]
专题	能源与动力工程学院
通讯作者	Zhao WG(赵伟国)
作者单位	1.甘肃省流体机械及系统重点实验室 2.兰州理工大学能源与动力工程学院
推荐引用方式 GB/T 7714	Zhao WG,Wang GP. Research on passive control of cloud cavitation based on a bionic fin-fin structure[J]. ENGINEERING COMPUTATIONS,2019,37(3):863-880.
APA	Zhao WG,&Wang GP.(2019).Research on passive control of cloud cavitation based on a bionic fin-fin structure.ENGINEERING COMPUTATIONS,37(3),863-880.
MLA	Zhao WG,et al."Research on passive control of cloud cavitation based on a bionic fin-fin structure".ENGINEERING COMPUTATIONS 37.3(2019):863-880.