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Evolution of Pressure and Cavitation on Side Walls Affected by Lateral Divergence Angle and Opening of Radial Gate
Li, Shuai1,2; Zhang, Jian-min2; Xu, Wei-lin2; Chen, Jian-gang1; Peng, Yong2
Corresponding AuthorZhang, Jian-min
2016
Source PublicationJOURNAL OF HYDRAULIC ENGINEERING
ISSN0733-9429
EISSN1943-7900
Volume142Issue:7Pages:DOI:10.1061/(ASCE)HY.1943-7900.0001129
SubtypeArticle
AbstractHigh-speed diffuse flow is a commonly complex process in tunnels with full-section aerators and lateral expansion walls. The transformation of pressure is prone to produce cavitation on the lateral expansion walls downstream of an aerator. The expansion threatens the stability of the structure and can cause damage. In this paper, the diffuse flows downstream of a radial sluice and full-section aerator were studied by combining a realizable k-epsilon turbulent model with a mixture multiphase model. Hydraulic characteristics such as pressure distribution and cavitation were investigated. The relationship among pressure, cavitation index, lateral divergence angle , and Froude number F were proposed. Empirical formulas were presented to calculate and evaluate the pressure and cavitation index on side walls. The calculated results agree well with the physical model. With decrease in divergence angle, pressure increases gradually so that the flow cavitation index increases as well. Profiles of gate openings demonstrated gradual improvement in pressure and cavitation index with an increase in the magnitude of the gate opening. The studies showed that the degree of gate opening has a great effect on the pressure and flow cavitation index of side walls. The lateral expansion and partial gate-opening increased the risk of cavitation erosion on side walls downstream of the radial sluice. Research results provided a reference for optimizing the design of similar engineering.
KeywordFull Sections Aerator And Radial Gate Tunnel Gate-opening Side-walls Divergent Numerical Simulation Cavitation Characteristics
WOS HeadingsScience & Technology ; Technology ; Physical Sciences
DOI10.1061/(ASCE)HY.1943-7900.0001129
WOS Subject ExtendedEngineering ; Water Resources
Indexed BySCI
WOS KeywordFREE-SURFACE FLOW ; NUMERICAL-SIMULATION ; HYDRAULIC CHARACTERISTICS ; SPILLWAY ; ENLARGEMENT ; UNCERTAINTY ; DESIGN ; MODEL ; JETS
Language英语
Quartile3区
TOP
WOS SubjectEngineering, Civil ; Engineering, Mechanical ; Water Resources
WOS IDWOS:000378860800003
Funding OrganizationNational Natural Science Foundation of China(51279118) ; National Key Basic Research Program of China (973 Program)(2013CB035905)
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17484
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
2.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, 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
Li, Shuai,Zhang, Jian-min,Xu, Wei-lin,et al. Evolution of Pressure and Cavitation on Side Walls Affected by Lateral Divergence Angle and Opening of Radial Gate[J]. JOURNAL OF HYDRAULIC ENGINEERING,2016,142(7):DOI:10.1061/(ASCE)HY.1943-7900.0001129.
APA Li, Shuai,Zhang, Jian-min,Xu, Wei-lin,Chen, Jian-gang,&Peng, Yong.(2016).Evolution of Pressure and Cavitation on Side Walls Affected by Lateral Divergence Angle and Opening of Radial Gate.JOURNAL OF HYDRAULIC ENGINEERING,142(7),DOI:10.1061/(ASCE)HY.1943-7900.0001129.
MLA Li, Shuai,et al."Evolution of Pressure and Cavitation on Side Walls Affected by Lateral Divergence Angle and Opening of Radial Gate".JOURNAL OF HYDRAULIC ENGINEERING 142.7(2016):DOI:10.1061/(ASCE)HY.1943-7900.0001129.
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