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Modelling roll waves with shallow water equations and turbulent closure
Cao ZX; Hu PH; Hu KH; Pender G; Liu QQ(刘青泉)
Source PublicationJournal of Hydraulic Research
2015
Volume53Issue:2Pages:161-177
ISSN0022-1686
AbstractA physically enhanced model is proposed for roll waves based on the shallow water equations and k−ϵ turbulence closure along with a modification component. It is tested against measured data on periodic permanent roll waves, and the impact of turbulence is demonstrated to be essential. It is revealed that a regular inlet perturbation may lead to periodic permanent or natural roll waves, when its period is shorter or longer than a critical value inherent to a specified normal flow. While a larger amplitude or shorter period of a regular inlet perturbation is conducive to the formation of periodic permanent roll waves, their period remains the same as that of the perturbation, while their amplitude increases with the perturbation period and is independent of the perturbation amplitude. An irregular inlet perturbation favours the formation of natural roll waves, so does a larger amplitude of the perturbation.
KeywordTurbulent Reynolds Stress Natural Roll Waves Shallow Water Equations Periodic Permanent Roll Waves K-epsilon Turbulence Model
DOI10.1080/00221686.2014.950350
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000354124600002
WOS KeywordINCLINED PLANE ; OPEN CHANNELS ; FLOW ; SIMULATION ; EVOLUTION ; DYNAMICS
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Civil ; Water Resources
Funding OrganizationNatural Science Foundation of China [51279144, 11432015] ; Chinese Academy of Sciences [KZZD-EW-05-01-03]
DepartmentLMFS水环境流体力学(LEM)
Classification二类/Q1
Citation statistics
Cited Times:25[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49405
Collection流固耦合系统力学重点实验室
Recommended Citation
GB/T 7714
Cao ZX,Hu PH,Hu KH,et al. Modelling roll waves with shallow water equations and turbulent closure[J]. Journal of Hydraulic Research,2015,53(2):161-177.
APA Cao ZX,Hu PH,Hu KH,Pender G,&Liu QQ.(2015).Modelling roll waves with shallow water equations and turbulent closure.Journal of Hydraulic Research,53(2),161-177.
MLA Cao ZX,et al."Modelling roll waves with shallow water equations and turbulent closure".Journal of Hydraulic Research 53.2(2015):161-177.
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