Numerical investigations into the ventilation elimination mechanism of a surface-piercing hydrofoil

doi:10.1016/j.oceaneng.2021.110225

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	Numerical investigations into the ventilation elimination mechanism of a surface-piercing hydrofoil
	Zhi, Yuchang 3; Zhan, Jiemin 3; Huang, Renfang 2; Qiu, Rundi 1,2; Wang, Yiwei 1,2
刊名	OCEAN ENGINEERING
	2022
卷号	243 页码:12
关键词	Surface-piercing hydrofoil Ventilation elimination Re-entrant jet RANS
ISSN号	0029-8018
DOI	10.1016/j.oceaneng.2021.110225
通讯作者	Huang, Renfang() ; Wang, Yiwei(wangyw@imech.ac.cn)
英文摘要	This paper investigates the ventilation elimination mechanisms during the deceleration process of a surfacepiercing hydrofoil using the unsteady Reynolds-averaged Navier-Stokes (RANS) method together with a Volume of Fluid (VOF) model. The numerical results are in good agreement with the experimental data. The ventilation elimination mechanism of the surface-piercing hydrofoil is analyzed from the perspectives of the hydrofoil hydrodynamic performance, the ventilated cavity evolution, vortex structures, and re-entrant jets. The results indicate that the ventilation elimination includes three stages, i.e. a decrease in the ventilated cavity, washout, and reattachment. The decrease in the ventilated cavity is due to the hydrofoil speed decrease in the FV flow. Washout is the transition from fully ventilated to partially ventilated flow, and reattachment is the transition from partially ventilated to fully wetted flow. The underwater vortex structures around the surfacepiercing hydrofoil are composed of a tip vortex, an unstable vortex induced by the shear layer, and a Karman vortex caused by the vortex shedding from the trailing edge of the hydrofoil. Ventilation stability strongly depends on the re-entrant jet. When Phi (the angle between the flow direction and the closure line of the ventilated cavity) is greater than 45 degrees, the re-entrant jet impinges on the ventilated cavity's leading edge and destabilizes the ventilated cavity.
资助项目	National Natural Science Foundation of China[52006232] ; National Natural Science Foundation of China[11772340] ; Youth Innovation Promotion Association CAS[Y201906]
WOS研究方向	Engineering ; Oceanography
语种	英语
WOS记录号	WOS:000744765100001
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/88393]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者	Huang, Renfang; Wang, Yiwei
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China 3.Sun Yat Sen Univ, Sch Aeronaut & Astronaut, Dept Appl Mech & Engn, Guangzhou 510275, Peoples R China
推荐引用方式 GB/T 7714	Zhi, Yuchang,Zhan, Jiemin,Huang, Renfang,et al. Numerical investigations into the ventilation elimination mechanism of a surface-piercing hydrofoil[J]. OCEAN ENGINEERING,2022,243:12.
APA	Zhi, Yuchang,Zhan, Jiemin,Huang, Renfang,Qiu, Rundi,&Wang, Yiwei.(2022).Numerical investigations into the ventilation elimination mechanism of a surface-piercing hydrofoil.OCEAN ENGINEERING,243,12.
MLA	Zhi, Yuchang,et al."Numerical investigations into the ventilation elimination mechanism of a surface-piercing hydrofoil".OCEAN ENGINEERING 243(2022):12.