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DOI | 10.1002/2017WR021340 |
Approximate Solutions for Ideal Dam-Break Sediment-Laden Flows on Uniform Slopes | |
Ni, Yufang1; Cao, Zhixian1; Borthwick, Alistair2; Liu, Qingquan3 | |
2018-04-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2018 |
卷号 | 54期号:4页码:2731-2748 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Scotland |
英文摘要 | Shallow water hydro-sediment-morphodynamic (SHSM) models have been applied increasingly widely in hydraulic engineering and geomorphological studies over the past few decades. Analytical and approximate solutions are usually sought to verify such models and therefore confirm their credibility. Dam-break flows are often evoked because such flows normally feature shock waves and contact discontinuities that warrant refined numerical schemes to solve. While analytical and approximate solutions to clear-water dam-break flows have been available for some time, such solutions are rare for sediment transport in dam-break flows. Here we aim to derive approximate solutions for ideal dam-break sediment-laden flows resulting from the sudden release of a finite volume of frictionless, incompressible water-sediment mixture on a uniform slope. The approximate solutions are presented for three typical sediment transport scenarios, i.e., pure advection, pure sedimentation, and concurrent entrainment and deposition. Although the cases considered in this paper are not real, the approximate solutions derived facilitate suitable benchmark tests for evaluating SHSM models, especially presently when shock waves can be numerically resolved accurately with a suite of finite volume methods, while the accuracy of the numerical solutions of contact discontinuities in sediment transport remains generally poorer. Plain Language Summary Approximate solutions are derived for idealized dam-break sedimentladen flows on uniform slopes with negligible boundary resistance and bed evolution. The approximate solutions are shown to agree well with numerical solutions based on finite volume method. This work facilitates benchmark solutions for verifying computational shallow water hydro-sediment-morphodynamic models, which see increasingly wide applications in the context of water resources engineering and geomorphological studies. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000434186400013 |
WOS关键词 | HYDRAULIC RESISTANCE ; NUMERICAL-SIMULATION ; TURBIDITY CURRENTS ; SUSPENDED SEDIMENT ; GRAVITY CURRENTS ; ALLUVIAL RIVERS ; INCLINED PLANE ; YELLOW-RIVER ; TRANSPORT ; WAVE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/21288 |
专题 | 资源环境科学 |
作者单位 | 1.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan, Hubei, Peoples R China; 2.Univ Edinburgh, Sch Engn, Edinburgh, Midlothian, Scotland; 3.Beijing Inst Technol, Dept Mech, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Ni, Yufang,Cao, Zhixian,Borthwick, Alistair,et al. Approximate Solutions for Ideal Dam-Break Sediment-Laden Flows on Uniform Slopes[J]. WATER RESOURCES RESEARCH,2018,54(4):2731-2748. |
APA | Ni, Yufang,Cao, Zhixian,Borthwick, Alistair,&Liu, Qingquan.(2018).Approximate Solutions for Ideal Dam-Break Sediment-Laden Flows on Uniform Slopes.WATER RESOURCES RESEARCH,54(4),2731-2748. |
MLA | Ni, Yufang,et al."Approximate Solutions for Ideal Dam-Break Sediment-Laden Flows on Uniform Slopes".WATER RESOURCES RESEARCH 54.4(2018):2731-2748. |
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