Numerical investigation of the tip-vortex-induced ventilation formation mechanism for a surface-piercing hydrofoil

doi:10.1063/5.0177292

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 investigation of the tip-vortex-induced ventilation formation mechanism for a surface-piercing hydrofoil
	Zhi, Yuchang 1; Huang RF(黄仁芳)2; Qiu RD(丘润荻)2,3; Wang YW(王一伟)2,3,4; Sun, Qun ; Cai ST(蔡淑婷)2,4
刊名	PHYSICS OF FLUIDS
	2023-12-01
卷号	35 期号:12 页码:16
ISSN号	1070-6631
DOI	10.1063/5.0177292
通讯作者	Huang, Renfang(hrenfang@imech.ac.cn)
英文摘要	Recent experiments have demonstrated that tip vortices can trigger the ventilation formation around a surface-piercing hydrofoil. However, the influence of this ventilation on transient flow structures and vortex evolution remains unresolved. This paper numerically investigates the tip-vortex-induced ventilation formation for a surface-piercing hydrofoil at a stalled yaw angle. The predicted unsteady ventilated cavities with tip vortices and pressure-side spray are in reasonable agreement with experimental observations. The ventilation formation process can be divided into three stages: base ventilation, tip-vortex ventilation, and suction-side ventilation. It is indicated that ventilation has a greater impact on the lift coefficient than the drag coefficient. The lift coefficient increases during the base ventilation and tip-vortex ventilation stages due to the expansion of the low-pressure stalled flow, but decreases in the suction-side ventilation stage because of the gradual replacement of this low-pressure region by an aerated cavity. Tip-leakage and tip-separation vortices initially exist independently at the hydrofoil tip, then expand and merge through air ventilation, ultimately forming a strongly stable tip vortex. Furthermore, ventilation promotes vortex generation, with the major contributors being the vortex stretching and baroclinic torque terms.
分类号	一类/力学重要期刊
资助项目	National Natural Science Foundation of China[52006232] ; National Natural Science Foundation of China[U22B6010] ; international partnership program of Chinese Academy of Sciences[025GJHZ2022118FN]
WOS关键词	LARGE-EDDY SIMULATION ; CAVITATING FLOW ; ELIMINATION ; INSIGHT
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001126207100007
资助机构	National Natural Science Foundation of China ; international partnership program of Chinese Academy of Sciences
其他责任者	Huang, Renfang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94670]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Liaocheng Univ, Sch Mech & Automot Engn, Liaocheng 252000, Peoples R China; 2.Inst Mech, Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China; 4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhi, Yuchang,Huang RF,Qiu RD,et al. Numerical investigation of the tip-vortex-induced ventilation formation mechanism for a surface-piercing hydrofoil[J]. PHYSICS OF FLUIDS,2023,35(12):16.
APA	Zhi, Yuchang,黄仁芳,丘润荻,王一伟,Sun, Qun,&蔡淑婷.(2023).Numerical investigation of the tip-vortex-induced ventilation formation mechanism for a surface-piercing hydrofoil.PHYSICS OF FLUIDS,35(12),16.
MLA	Zhi, Yuchang,et al."Numerical investigation of the tip-vortex-induced ventilation formation mechanism for a surface-piercing hydrofoil".PHYSICS OF FLUIDS 35.12(2023):16.