| Modelling roll waves with shallow water equations and turbulent closure |
| Cao ZX ; Hu PH; Hu KH; Pender G; Liu QQ(刘青泉)
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| 发表期刊 | Journal of Hydraulic Research
 |
| 2015
|
| 卷号 | 53期号:2页码:161-177 |
| ISSN | 0022-1686
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| 摘要 | A 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. |
| 关键词 | Turbulent Reynolds Stress
Natural Roll Waves
Shallow Water Equations
Periodic Permanent Roll Waves
K-epsilon Turbulence Model
|
| DOI | 10.1080/00221686.2014.950350
|
| URL | 查看原文
|
| 收录类别 | SCI
; EI
|
| 语种 | 英语
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| WOS记录号 | WOS:000354124600002
|
| 关键词[WOS] | INCLINED PLANE
; OPEN CHANNELS
; FLOW
; SIMULATION
; EVOLUTION
; DYNAMICS
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| WOS研究方向 | Engineering
; Water Resources
|
| WOS类目 | Engineering, Civil
; Water Resources
|
| 项目资助者 | Natural Science Foundation of China [51279144, 11432015]
; Chinese Academy of Sciences [KZZD-EW-05-01-03]
|
| 课题组名称 | LMFS水环境流体力学(LEM)
|
| 论文分区 | 二类/Q1
|
| 引用统计 |
|
| 文献类型 | 期刊论文
|
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/49405
|
| 专题 | 流固耦合系统力学重点实验室
|
推荐引用方式
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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