Characteristics Of Energy Dissipation In Hyperconcentrated Flows
文献类型：期刊论文
| 作者 | Shu AP(舒安平) ; Liu QQ(刘青泉); Yi YJ; Zhang ZD
|
| 刊名 | International Journal of Sediment Research
 |
| 出版日期 | 2008 |
| 卷号 | 23期号:4页码:387-397 |
| 通讯作者邮箱 | shuap@bnu.edu.cn ; qqliu@imech.ac.cn ; yiyujun@bnu.edu.cn ; gulley@163.com |
| 关键词 | Hyperconcentrated Flows Turbulence Energy Efficiency Coefficient Energy Dissipation Unit Stream Power Sediment Transport Capacity |
| ISSN号 | 1001-6279 |
| 通讯作者 | Shu, AP (reprint author), Beijing Normal Univ, Minist Educ, Key Lab Water & Sediment Sci, Sch Environm, Beijing 100875, Peoples R China. |
| 中文摘要 | An equilibrium equation for the turbulence energy in sediment-laden flows was derived on the basis of solid-liquid two-phase flow theory. The equation was simplified for two-dimensional, uniform, steady and fully developed turbulent hyperconcentrated flows. An energy efficiency coefficient of suspended-load motion was obtained from the turbulence energy equation, which is defined as the ratio of the sediment suspension energy to the turbulence energy of the sediment-laden flows. Laboratory experiments were conducted to investigate the characteristics of energy dissipation in hyperconcentrated flows. A total of 115 experimental runs were carried out, comprising 70 runs with natural sediments and 45 runs with cinder powder. Effects of sediment concentration on sediment suspension energy and flow resistance were analyzed and the relation between the energy efficiency coefficient of suspended-load motion and sediment concentration was established on the basis of experimental data. Furthermore, the characteristics of energy dissipation in hyperconcentrated flows were identified and described. It was found that the high sediment concentration does not increase the energy dissipation; on the contrary, it decreases flow resistance. |
| 类目[WOS] | Environmental Sciences ; Water Resources |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Water Resources |
| 关键词[WOS] | UNIT STREAM POWER ; SEDIMENT TRANSPORT CAPACITY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000262693300009 |
| 公开日期 | 2009-08-03 ; 2009-09-14 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/25794]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Shu AP,Liu QQ,Yi YJ,et al. Characteristics Of Energy Dissipation In Hyperconcentrated Flows[J]. International Journal of Sediment Research,2008,23(4):387-397. |
| APA | Shu AP,Liu QQ,Yi YJ,&Zhang ZD.(2008).Characteristics Of Energy Dissipation In Hyperconcentrated Flows.International Journal of Sediment Research,23(4),387-397. |
| MLA | Shu AP,et al."Characteristics Of Energy Dissipation In Hyperconcentrated Flows".International Journal of Sediment Research 23.4(2008):387-397. |
入库方式： OAI收割
来源：力学研究所
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