Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR019558 |
A new unconditionally stable and consistent quasi-analytical in-stream water quality solution scheme for CSTR-based water quality simulators | |
Woldegiorgis, Befekadu Taddesse1; van Griensven, Ann1,2; Pereira, Fernando3; Bauwens, Willy1 | |
2017-06-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Belgium; Netherlands |
英文摘要 | Most common numerical solutions used in CSTR-based in-stream water quality simulators are susceptible to instabilities and/or solution inconsistencies. Usually, they cope with instability problems by adopting computationally expensive small time steps. However, some simulators use fixed computation time steps and hence do not have the flexibility to do so. This paper presents a novel quasi-analytical solution for CSTR-based water quality simulators of an unsteady system. The robustness of the new method is compared with the commonly used fourth-order Runge-Kutta methods, the Euler method and three versions of the SWAT model (SWAT2012, SWAT-TCEQ, and ESWAT). The performance of each method is tested for different hypothetical experiments. Besides the hypothetical data, a real case study is used for comparison. The growth factors we derived as stability measures for the different methods and the R-factor-considered as a consistency measure-turned out to be very useful for determining the most robust method. The new method outperformed all the numerical methods used in the hypothetical comparisons. The application for the Zenne River (Belgium) shows that the new method provides stable and consistent BOD simulations whereas the SWAT2012 model is shown to be unstable for the standard daily computation time step. The new method unconditionally simulates robust solutions. Therefore, it is a reliable scheme for CSTR-based water quality simulators that use first-order reaction formulations. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405997000010 |
WOS关键词 | STRONG STABILITY ; LAND-USE ; UNCERTAINTY ; MODEL ; HYDROLOGY ; SELECTION ; DISCRETE ; IMPACT |
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/21308 |
专题 | 资源环境科学 |
作者单位 | 1.Vrije Univ Brussel, Dept Hydrol & Hydraul Engn, Brussels, Belgium; 2.UNESCO IHE Inst Water Educ, Delft, Netherlands; 3.Flanders Hydraul Res, Waterbouwkundig Lab, Antwerp, Belgium |
推荐引用方式 GB/T 7714 | Woldegiorgis, Befekadu Taddesse,van Griensven, Ann,Pereira, Fernando,et al. A new unconditionally stable and consistent quasi-analytical in-stream water quality solution scheme for CSTR-based water quality simulators[J]. WATER RESOURCES RESEARCH,2017,53(6). |
APA | Woldegiorgis, Befekadu Taddesse,van Griensven, Ann,Pereira, Fernando,&Bauwens, Willy.(2017).A new unconditionally stable and consistent quasi-analytical in-stream water quality solution scheme for CSTR-based water quality simulators.WATER RESOURCES RESEARCH,53(6). |
MLA | Woldegiorgis, Befekadu Taddesse,et al."A new unconditionally stable and consistent quasi-analytical in-stream water quality solution scheme for CSTR-based water quality simulators".WATER RESOURCES RESEARCH 53.6(2017). |
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