| 水流作用下地形不稳定性计算模型 |
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| 引用本文： | 王明明,邹志利.水流作用下地形不稳定性计算模型[J].水道港口,2011,32(6):389-398. |
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| 作者姓名： | 王明明 邹志利 |
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| 作者单位： | 大连理工大学海岸和近海工程国家重点实验室,大连,116024 |
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| 基金项目： | 国家自然科学基金项目(51079024);辽宁省教育厅高等学校自然科学基金 |
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| 摘 要： | 河流中水流和水底泥沙之间的相互作用会产生各种复杂的地形形态,交替型沙坝是其中的一种地貌特征,研究表明这一地貌的形成机理是水底地形的不稳定性.给出了这一不稳定性所导致的交替型沙坝的数值模拟方法和相应结果.水流方程采用了交替方向隐式算法求解,水底变形方程采用了比传统方法更加稳定的欧拉加权基本无振荡迎风格式求解,从而建立了水...
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| 关 键 词： | 地形演变 非线性 WENO 不稳定性 |
Numerical model of morphology instability under flow |
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| WANG Ming-ming
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ZOU Zhi-li.Numerical model of morphology instability under flow[J].Journal of Waterway and Harbour,2011,32(6):389-398. |
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| Authors: | WANG Ming-ming ZOU Zhi-li |
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| Institution: | (State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | The interaction between flow and topography may result in different forms of complex morphologies in the river,and alternate bars are one kind of these formation mechanism is the instability of the bottom topograph ologies.Researches show that the corresponding y.In this paper, numerical simulation method and results of alternate bars caused by the bed instability were presented.The ADI scheme was implemented to solve the flow equation,and the equation for bed level change was solved by Euler-WENO scheme,which was more stable than the traditional schemes.This coupled computation model of flow and bottom morphology was used to study the evolution of the straight channel with alternate bars. |
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| Keywords: | bed evolution nonlinear WENO instability |
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