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Title:
Experimental and numerical investigation on cloud cavitating flow around an axisymmetric projectile near the wall with emphasis on the analysis of local cavity shedding
Author: Yu C(余超); Wang YW(王一伟); Huang CG(黄晨光); Du TZ(杜特专); Xu, Chang; Huang, Jian
Source: OCEAN ENGINEERING
Issued Date: 2017-08-01
Volume: 140, Pages:377-387
Abstract: In this paper, the mechanisms of cavitating flow around an axisymmetric projectile near a wall with local cloud cavity shedding are analyzed using experimental and numerical methods. Several experiments are designed to observe the evolution of cavity around an axisymmetric projectile near a wall underwater with cavitation number sigma = 0.45. Numerical simulations using the large eddy simulation (LES) approach, Kunz cavitation model, and volume of fluid (VOF) method are established in an open-source code OpenFOAM framework to present more information on the flow structure. The shape and length of the cavity are in good agreement with the experimental observation, which guarantees the accuracy of the numerical methods. The characteristics of cavitation around the axisymmetric projectile near the wall are reported, and the wall effect is briefly analyzed according to the experimental observations and the details obtained from the numerical results. Local cavity shedding, which increases the instability of cavity periodic shedding, is observed to be induced by the combination of the vortex structure, jet at the cavity closure, and special cavity shape on the projectile near the wall.
Keyword: Unsteady cloud cavitation ; Effect of wall ; Large eddy simulation ; Local cavity shedding
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Wang, YW (reprint author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, 15 Beisihuanxi Rd, Beijing 100190, Peoples R China.
Correspondent Email: yuchaohust@l63.com ; wangyw@imech.ac.cn ; huangcg@imech.ac.cn ; dutezhuan@imech.ac.cn ; xuchang@imech.ac.cn ; huangjian@imech.ac.cn
DOI: 10.1016/j.oceaneng.2017.06.007
DOC Type: Article
WOS Subject: Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
WOS Subject Extended: Engineering ; Oceanography
WOS Keyword Plus: LARGE-EDDY SIMULATION ; TWISTED HYDROFOIL ; PREDICTION ; MODEL ; FOIL ; LES
WOS ID: WOS:000405765000034
ISSN: 0029-8018
Funder: National Natural Science Foundation of China(11202215 ; Youth Innovation Promotion Association of CAS(2015015) ; 11332011)
Department: LMFS冲击与耦合效应(LHO)
Classification: 一类
Ranking: 1
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/60914
Appears in Collections:流固耦合系统力学重点实验室(2012-)_期刊论文

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Recommended Citation:
Yu C,Wang YW,Huang CG,et al. Experimental and numerical investigation on cloud cavitating flow around an axisymmetric projectile near the wall with emphasis on the analysis of local cavity shedding[J]. OCEAN ENGINEERING,2017-08-01,140:377-387.
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