| 三峡下游非恒定流的数值模拟 |
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| 引用本文： | 周龙才,刘士和.三峡下游非恒定流的数值模拟[J].水道港口,2009,30(3):176-181. |
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| 作者姓名： | 周龙才 刘士和 |
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| 作者单位： | 武汉大学,水资源与水电工程科学国家重点实验室,武汉,430072 |
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| 摘 要： | 对三峡坝区下游的黄陵庙至南津关长约28.5 km的河段进行了一维和二维非恒定流数值模拟。文中采用Presimann四点偏心隐式差分求解一维非恒定流,采用正交曲线坐标系下二维水深平均数学模型进行二维非恒定流计算。根据实测资料,由河段上、下游的黄陵庙、南津关(二)水位站测定的水位过程给定水位边界条件,通过河段中的莲沱、石牌、平善坝水位站的实测水位过程以及黄陵庙(陡)水文站实测的流量过程进行模型验证,结果表明一维和二维数模计算出的水位、流量过程与实测值符合良好。由于二维计算时间远大于一维,因此在拟定和优化三峡—葛洲坝联合调峰运行方案时可主要采用一维非恒定流模型,在某些工况下,因通航限制而需要限定局部河段流速时可采用二维非恒定流模型。
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| 关 键 词： | 非恒定流 数值模拟 三峡工程 |
Numerical simulation of unsteady flow in downstream area of the Three Gorges project |
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| ZHOU Long-cai,LIU Shi-he.Numerical simulation of unsteady flow in downstream area of the Three Gorges project[J].Journal of Waterway and Harbour,2009,30(3):176-181. |
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| Authors: | ZHOU Long-cai LIU Shi-he |
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| Institution: | State Key Laboratory of Water Resource and Hydropower Engineering Science;Wuhan University;Wuhan 430072;China |
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| Abstract: | The numerical simulations of 1D and 2D unsteady flow in the river from Huanglingmiao to Nanjinguan in the downstream area of the Three Gorges project are carried on.The Presimann four eccentric implicit expression differences is used in the computation for 1D unsteady flow,and the 2D average water depth mathematical model in orthogonal curve-linear coordinate system is used in the computation for 2D unsteady flow.The upstream and downstream boundary conditions are given by the actual water level processes.A... |
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| Keywords: | unsteady flow numerical simulation the Three Gorges project |
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