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DOI | 10.1029/2018WR022996 |
Near-Field Model for a High-Momentum Negatively Buoyant Line Source Within a Three-Dimensional Hydrostatic Lake Model | |
King, A. T.; Cowen, E. A. | |
2019-02-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2019 |
卷号 | 55期号:2页码:1337-1365 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This work is motivated by a case study in which cooling water effluent is discharged from a line source diffuser onto the shallow southern shelf of a large lake. The effluent is discharged with high momentum to the north, and the plume influences the surrounding flow for hundreds of meters before becoming a passive tracer. We plan to use a three-dimensional hydrodynamic model to examine the impact of this effluent on water residence time within the southern shelf, but in order to accomplish this task, we require a method for incorporating the effluent-driven flow into the hydrodynamic model, which by default does not predict the correct rate of spreading of the plume or the correct rate of lateral entrainment of ambient water. In this paper we develop a method for incorporating the effects of high-momentum line source discharges into any three-dimensional or two-dimensional (depth-averaged) hydrodynamic model that employs a horizontal eddy viscosity and diffusivity. Our approach is to modify horizontal eddy viscosity and diffusivity to enforce the correct rate of lateral entrainment of the plume. We validate the new method using three test cases relevant to our case study: a neutrally buoyant jet, a cylindrical gravity current, and a negatively buoyant jet. |
英文关键词 | near-field model far-field model discharge hydrodynamic model thermal effluent |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461858900025 |
WOS关键词 | MULTIPORT DIFFUSER ; OUTFALLS ; TRANSPORT |
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/181296 |
专题 | 资源环境科学 |
作者单位 | Cornell Univ, Dept Civil & Environm Engn, DeFrees Hydraul Lab, Ithaca, NY 14853 USA |
推荐引用方式 GB/T 7714 | King, A. T.,Cowen, E. A.. Near-Field Model for a High-Momentum Negatively Buoyant Line Source Within a Three-Dimensional Hydrostatic Lake Model[J]. WATER RESOURCES RESEARCH,2019,55(2):1337-1365. |
APA | King, A. T.,&Cowen, E. A..(2019).Near-Field Model for a High-Momentum Negatively Buoyant Line Source Within a Three-Dimensional Hydrostatic Lake Model.WATER RESOURCES RESEARCH,55(2),1337-1365. |
MLA | King, A. T.,et al."Near-Field Model for a High-Momentum Negatively Buoyant Line Source Within a Three-Dimensional Hydrostatic Lake Model".WATER RESOURCES RESEARCH 55.2(2019):1337-1365. |
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