Numerical Study of the Behaviors of Ventilated Supercavities in a Periodic Gust Flow

doi:10.1115/1.4046110

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 Study of the Behaviors of Ventilated Supercavities in a Periodic Gust Flow
	Huang RF(黄仁芳)3,4; Shao SY 3; Arndt REA 3; Luo XW 2; Wang YW(王一伟)4; Hong JR 1,3
刊名	JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME
	2020-06-01
卷号	142 期号:6 页码:15
ISSN号	0098-2202
DOI	10.1115/1.4046110
英文摘要	We conducted a numerical simulation of ventilated supercavitation from a forward-facing cavitator in unsteady flows generated by a gust generator under different gust angles of attack and gust frequencies. The numerical method is validated through the experimental results under specific steady and unsteady conditions. It is shown that the simulation can capture the degree of cavity shape fluctuation and internal pressure variation in a gust cycle. Specifically, the cavity centerline shows periodic wavelike undulation with a maximum amplitude matching that of the incoming flow perturbation. The cavity internal pressure also fluctuates periodically, causing the corresponding change of difference between internal and external pressure across the closure that leads to the closure mode change in a gust cycle. In addition, the simulation captures the variation of cavity internal flow, particularly the development internal flow boundary layer along the cavitator mounting strut, upon the incoming flow perturbation, correlating with cavity deformation and closure mode variation. With increasing angle of attack, the cavity exhibits augmented wavelike undulation and pressure fluctuation. As the wavelength of the flow perturbation approaches the cavity length with increasing gust frequency, the cavity experiences stronger wavelike undulation and internal pressure fluctuation but reduced cavitation number variation.
分类号	二类
WOS关键词	CAVITATING FLOW ; CLOSURE
WOS研究方向	Engineering
语种	英语
WOS记录号	WOS:000530279100010
资助机构	China Scholarship Council ; National Key R&D Program of China[2017YFC1404200] ; Office of Naval Research[N000141612755] ; University of Minnesota
其他责任者	Hong, Jiarong
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/84771]
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.Univ Minnesota, Dept Mech Engn, Minneapolis, MN 55414 USA 2.Tsinghua Univ, Dept Energy & Power Engn, Beijing 100084, Peoples R China; 3.Univ Minnesota, St Anthony Falls Lab, Minneapolis, MN 55414 USA; 4.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Huang RF,Shao SY,Arndt REA,et al. Numerical Study of the Behaviors of Ventilated Supercavities in a Periodic Gust Flow[J]. JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME,2020,142(6):15.
APA	黄仁芳,Shao SY,Arndt REA,Luo XW,王一伟,&Hong JR.(2020).Numerical Study of the Behaviors of Ventilated Supercavities in a Periodic Gust Flow.JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME,142(6),15.
MLA	黄仁芳,et al."Numerical Study of the Behaviors of Ventilated Supercavities in a Periodic Gust Flow".JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME 142.6(2020):15.