• 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引(EI)收录期刊
Tan Weiyan, Hu Siyi, Wang Yintang, Xu Chenglong, Zhong Zhiyu, Hu Weizhong. Flow Modelling of the Middle Yangtze River Dongting Lake Flood Control System——Ⅰ.Modelling Procedures and Basic Algorithms[J]. Advances in Water Science, 1996, 7(4): 336-345.
Citation: Tan Weiyan, Hu Siyi, Wang Yintang, Xu Chenglong, Zhong Zhiyu, Hu Weizhong. Flow Modelling of the Middle Yangtze River Dongting Lake Flood Control System——Ⅰ.Modelling Procedures and Basic Algorithms[J]. Advances in Water Science, 1996, 7(4): 336-345.

Flow Modelling of the Middle Yangtze River Dongting Lake Flood Control System——Ⅰ.Modelling Procedures and Basic Algorithms

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  • Received Date: December 24, 1995
  • Revised Date: June 27, 1996
  • For the large-scale flood control system of the middle Yangtze River-Dongting Lake, featuring by complex flow conditions, data scarcity, and a limited lead time, a hierarchical and modular flow simulation model has been proposed, combining together 1-D with 2-D flow models, hydraulic with hydrologic methods, numerical algorithms with supplementary information. A finite-volume method for calculating 2-D unsteady flows on an unstructured mesh is used for the lake of a complex configuration, to preserve mass balance. A conservative explicit difference scheme is applied to simulate branched and looped network unsteady flows, to avoidtedious matrixcal culations caused by using implicit schemes, and facilitate the 2-D model and various flow connections. This hybrid unsteady flow model has been utilized to flood routing for the system connected through sub-lakes, river networks, and flood-plains.
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