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Characteristics of the Velocity Distribution in a Hydraulic Jump Stilling Basin with Five Parallel Offset Jets in a Twin-Layer Configuration
Chen, J. G.1,2; Zhang, J. M.1; Xu, W. L.1; Peng, Y.1
Corresponding AuthorJ.M. Zhang
2014
Source PublicationJOURNAL OF HYDRAULIC ENGINEERING
ISSN0733-9429
EISSN1943-7900
Volume140Issue:2Pages:208-217
SubtypeArticle
AbstractThe flow structure of vertical and horizontal planes in a stilling basin with five parallel offset jets in a twin-layer configuration for four offset ratios (S1/h=1,2,3,4) has been investigated. The velocity distribution was measured, processed, and subsequently used to characterize the flow structure. The flow pattern in the stilling basin exhibits a mixing flow pattern of jets and hydraulic jumps. As the downstream water depth increases in the stilling basin, five different flow patterns appear successively: free jets, hydraulic jumps, submerged jets and hydraulic jumps, mixed submerged jets and critical jumps, and mixed submerged jets and submerged jumps. The results indicate that the velocity distributions in the vertical and horizontal planes of the lower-layer orifices and in the potential core region of the upper-layer orifices are similar to the classical jet; in other regions, the velocity distribution is similar to the hydraulic jump. In addition, the energy dissipation ratio increases with the increasing Froude number, with a value of greater than 70% at F>8.0. The energy dissipation ratio in the stilling basin with five parallel offset jets in a twin-layer configuration is, on average, 5% larger than that of the SBJ basin and 13% larger than that of the classical jump basin.
KeywordEnergy Dissipation Stilling Basin Flow Pattern Parallel Jets Offset Height Hydraulic Jump
Subject Area水利工程
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1061/(ASCE)HY.1943-7900.0000817
WOS Subject ExtendedEngineering ; Water Resources
Indexed BySCI
WOS KeywordHORIZONTAL SUBMERGED JETS ; TURBULENT WALL JETS ; PLANE JETS ; FLOW CHARACTERISTICS ; VERTICAL DROP ; FREE-SURFACE ; SQUARE JET ; FIELD ; POOL
Language英语
Quartile3区
TOP
WOS SubjectEngineering, Civil ; Engineering, Mechanical ; Water Resources
WOS IDWOS:000333446600009
Funding OrganizationNational Natural Science Foundation of China(51279118) ; National Science and Technology Pillar Program(2008BAB29B04)
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/7127
Collection山地灾害与地表过程重点实验室
Affiliation1.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Chen, J. G.,Zhang, J. M.,Xu, W. L.,et al. Characteristics of the Velocity Distribution in a Hydraulic Jump Stilling Basin with Five Parallel Offset Jets in a Twin-Layer Configuration[J]. JOURNAL OF HYDRAULIC ENGINEERING,2014,140(2):208-217.
APA Chen, J. G.,Zhang, J. M.,Xu, W. L.,&Peng, Y..(2014).Characteristics of the Velocity Distribution in a Hydraulic Jump Stilling Basin with Five Parallel Offset Jets in a Twin-Layer Configuration.JOURNAL OF HYDRAULIC ENGINEERING,140(2),208-217.
MLA Chen, J. G.,et al."Characteristics of the Velocity Distribution in a Hydraulic Jump Stilling Basin with Five Parallel Offset Jets in a Twin-Layer Configuration".JOURNAL OF HYDRAULIC ENGINEERING 140.2(2014):208-217.
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