| 河床变形计算方法的研究及其工程应用 |
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| 引用本文： | 刘万利.河床变形计算方法的研究及其工程应用[J].水道港口,2004,25(4):185-190. |
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| 作者姓名： | 刘万利 |
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| 作者单位： | 交通部天津水运工程科学研究所,天津,300456 |
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| 摘 要： | 根据泥沙交换原理,对河床变形计算方法进行了若干改进。采用有限体积法(SIMPLEC程式)对拟合坐标系下的水沙基本控制方程进行了离散,在求解过程中采用了欠松弛技术和逐线迭代法。在北盘江坝油滩河道中对水位、水流流速以及河床冲淤等进行了验证计算及分析。数值实验表明,该模型能正确地模拟天然河道水流以及河床的冲刷、淤积过程。
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| 关 键 词： | 河床变形 正交曲线贴体坐标 有限体积法 数学模型 |
| 文章编号： | 1005-8443(2004)04-0185-06 |
| 修稿时间： | 2004年6月3日 |
On Calculation Method for River-bed Deformation and Its Application in Waterway Engineering |
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| Abstract: | On the basis of mechanism of sediment exchange,some improvements in relation to the calculation method for river-bed deformation are performed.The governing equations of flow and sediment under the body-fitted curvilinear coordinate system are discretized with the finite volume method.The SIMPLEC procedure,relaxation technique and line-by-line method are used in solution of the discrete equations.The water level,velocity and river-bed deformation are (verified) by the field data in Bayoutan Reach of Beipanjiang River.The results show that the flow field and the process of river-bed erosion and deposition can be simulated correctly by this method. |
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| Keywords: | river-bed deformation orthogonal curvilinear body-fitted coordinate finite volume method mathematical model |
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