RE-ENTRY JET AND SHOCK INDUCED CAVITY SHEDDING IN CLOUD CAVITATING FLOW AROUND AN AXISYMMETRIC PROJECTILE

IMECH-IR > 流固耦合系统力学重点实验室

	RE-ENTRY JET AND SHOCK INDUCED CAVITY SHEDDING IN CLOUD CAVITATING FLOW AROUND AN AXISYMMETRIC PROJECTILE
	Wang YW(王一伟); Ye BS ; Wang JZ(王静竹); Huang CG(黄晨光)
会议录名称	PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2018, VOL 2
	2018
页码	V002T16A002
会议名称	ASME Fluids Engineering Division Summer Meeting (FEDSM2018)
会议日期	JUL 15-20, 2018
会议地点	Montreal, CANADA
摘要	Shedding is one of the most important expressions of the instability of cavitating flow Most previous research works were focused on the shedding mechanism induced by the re-entry jet. Shock induced shedding on a wedge is identified recently by using time resolved X-ray densitometry which attracted lots of attention. In the present paper, cavitation dynamics around an axisymmetric body are investigated. Both shock propagation and re-entry jet as inducing factors of shedding are observed in different cycles in a single experiment. Relevant numerical simulations are carried out based on a fully compressible approach under the framework of the open-source code OpenFOAM. Numerical and experimental results agree well with each other. Results indicate shedding is induced by the reentry jet in the first cycle. Re-entry jet occurs and cut the cavity off on the should which induces the shedding of cloud cavity in the first cycle. However in the second and subsequent cycles, shocks are generated by the collapse of shedding cavities and propagate to the cavity closure and induces stronger re-entry jet. Its effect on cavity instability is indirect which still needs a strong re-entry jet as the medium media.
WOS记录号	WOS:000457516200068
资助信息	National Natural Science Foundation of China [11772340, 11672315]; Youth Innovation Promotion Association CAS [2015015]
ISBN号	978-0-7918-5156-2
收录类别	CPCI-S ; EI
语种	英语
引用统计
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/78565
专题	流固耦合系统力学重点实验室
作者单位	1.{Wang, Yiwei、Ye, Bingsheng、Wang, Jingzhu、Huang, Chenguang} Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing, Peoples R China 2.{Wang, Yiwei、Ye, Bingsheng、Wang, Jingzhu、Huang, Chenguang} Univ Chinese Acad of Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang YW,Ye BS,Wang JZ,et al. RE-ENTRY JET AND SHOCK INDUCED CAVITY SHEDDING IN CLOUD CAVITATING FLOW AROUND AN AXISYMMETRIC PROJECTILE[C]PROCEEDINGS OF THE ASME FLUIDS ENGINEERING DIVISION SUMMER MEETING, 2018, VOL 2,2018:V002T16A002.

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