| 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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| Source Publication | Journal of Hydraulic Research
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| 2015 | |
| Volume | 53Issue:2Pages:161-177 |
| ISSN | 0022-1686 |
| Abstract | 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. |
| Keyword | 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 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000354124600002 |
| WOS Keyword | INCLINED PLANE ; OPEN CHANNELS ; FLOW ; SIMULATION ; EVOLUTION ; DYNAMICS |
| WOS Research Area | Engineering ; Water Resources |
| WOS Subject | Engineering, Civil ; Water Resources |
| Funding Organization | Natural Science Foundation of China [51279144, 11432015] ; Chinese Academy of Sciences [KZZD-EW-05-01-03] |
| Department | LMFS水环境流体力学(LEM) |
| Classification | 二类/Q1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://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. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| 05-JWR-online-2014.p（2213KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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