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The effect of free surface on cloud cavitating flow around a blunt body
Xu C(徐畅); Wang YW(王一伟); Huang CG(黄晨光); Huang J(黄荐); Yu C(余超)
Source PublicationJOURNAL OF HYDRODYNAMICS
2017-12-01
Volume29Issue:6Pages:979-986
ISSN1001-6058
Abstract

In this study, the effect of the free surface on the cloud cavitating flow around a blunt body is investigated based on the water tank experiment and the CFD method. Numerical results are in good agreement with experimental data, and the mesh independence of the methods is verified. The cavity evolution process includes the cavity growth, the re-entrant jet, the cavity shedding, and the collapse, which can all be observed from the water tank experiment. The effects of the free surface on the cavity length, the thickness, and the cavity evolution period are analyzed by comparing the difference between the cavitating flows on the upper and lower sides of the body. This study also examines the effect of the distance between the free surface and the model through a series of water tank experiments and numerical simulations. The cavity stability and asymmetry, as well as the thickness and the velocity of the re-entrant jet inside the cavity, which varies with the submerged depth, are discussed with consideration of the effect of the free surface. The effect of the free surface on the cavitating flow around the blunt body is enhanced with the decrease of the submerged depth.

KeywordCavitation Multiphase Flow Water Tank Experiment Cfd Free Surface
DOI10.1016/S1001-6058(16)60812-0
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000415278700008
WOS KeywordLarge-eddy Simulation ; Axisymmetrical Projectile ; Twisted Hydrofoil ; Turbulence ; Emphasis
WOS Research AreaMechanics
WOS SubjectMechanics
Funding OrganizationNational Natural Science Foundation of China(11772340 ; Youth Innovation Promotion Association of CAS(2015015) ; 11672315)
CSCD IDCSCD:6119950
DepartmentLMFS冲击与耦合效应(LHO)
ClassificationQ3
Ranking1
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/71930
Collection流固耦合系统力学重点实验室
Corresponding AuthorWang YW(王一伟)
Recommended Citation
GB/T 7714
Xu C,Wang YW,Huang CG,et al. The effect of free surface on cloud cavitating flow around a blunt body[J]. JOURNAL OF HYDRODYNAMICS,2017,29(6):979-986.
APA Xu C,Wang YW,Huang CG,Huang J,&Yu C.(2017).The effect of free surface on cloud cavitating flow around a blunt body.JOURNAL OF HYDRODYNAMICS,29(6),979-986.
MLA Xu C,et al."The effect of free surface on cloud cavitating flow around a blunt body".JOURNAL OF HYDRODYNAMICS 29.6(2017):979-986.
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