Experimental and numerical study on ventilated cavitation of high-speed projectile

doi:10.1063/5.0194931

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-)

	Experimental and numerical study on ventilated cavitation of high-speed projectile
	Wang, Yongjiu 2,3; Du, Tezhuan 2,3; Huang, Jian 3; Qiu, Rundi 1,3; Wang, Yiwei 1,2,3; Zhou, Jifu 2,3
刊名	PHYSICS OF FLUIDS
	2024-03-01
卷号	36 期号:3 页码:18
ISSN号	1070-6631
DOI	10.1063/5.0194931
通讯作者	Du, Tezhuan(dutezhuan@imech.ac.cn) ; Huang, Jian(huangjian@imech.ac.cn)
英文摘要	In this study, ventilated cavitating flow characteristics around an axisymmetric projectile are investigated by combining experiments and numerical simulations. Experiments were carried out with a Split-Hopkinson pressure bar launch system and the pressure-equaling exhaust technology. Modular projectiles are designed to experimentally investigate the influence of head shape and ventilatory volume on flow characteristics. Large eddy simulation model is applied to obtain more flow field information. Compared with the conical head projectile, the hemispherical head projectile has a thinner attached cavity and more local detachment of the cavity. The statistical structure of the velocity and pressure fluctuations are analyzed by combining histograms and Q-Q diagrams. The results show that the pressure drag is dominant in the total drag and the periodic pulsation of the tail cavity and the stable vortex structure at the tail cause the variation of drag. The larger cavity volume changes the actual shape of the projectile, making the drag of the conical head projectile higher. The evolution characteristics of the cavitating flow field around the projectile with different ventilatory volumes are obtained, and the relationship between pressure fluctuation and chamber volume is derived. It is found that the reentrant jet causes a reverse flow at the nozzle, which leads to local pressure rise at the same interval. The above research work could contribute to the design and flow control of the ventilated cavity body.
资助项目	National Key R&D Program of China[2022YFB3303500] ; National Key R&D Program of China[2022YFB3303502] ; National Natural Science Foundation of China[U22B6010] ; National Natural Science Foundation of China[52006232]
WOS关键词	LARGE-EDDY SIMULATION ; ENTRAINMENT CHARACTERISTICS ; DRAG REDUCTION ; FLOW ; SUPERCAVITY ; EMPHASIS ; BODY
WOS研究方向	Mechanics ; Physics
语种	英语
WOS记录号	WOS:001181007100024
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/94905]
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	Du, Tezhuan; Huang, Jian
作者单位	1.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yongjiu,Du, Tezhuan,Huang, Jian,et al. Experimental and numerical study on ventilated cavitation of high-speed projectile[J]. PHYSICS OF FLUIDS,2024,36(3):18.
APA	Wang, Yongjiu,Du, Tezhuan,Huang, Jian,Qiu, Rundi,Wang, Yiwei,&Zhou, Jifu.(2024).Experimental and numerical study on ventilated cavitation of high-speed projectile.PHYSICS OF FLUIDS,36(3),18.
MLA	Wang, Yongjiu,et al."Experimental and numerical study on ventilated cavitation of high-speed projectile".PHYSICS OF FLUIDS 36.3(2024):18.