| 可变网格下的水库滑坡涌浪数值模拟研究 |
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| 引用本文： | 袁晶,张小峰,张为.可变网格下的水库滑坡涌浪数值模拟研究[J].水科学进展,2008,19(4):546-551. |
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| 作者姓名： | 袁晶 张小峰 张为 |
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| 作者单位： | 1.长江水利委员会水文局, 湖北, 武汉, 430010; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家科技支撑计划，国家重点实验室基金 |
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| 摘 要： | 采用动网格技术,建立了可变网格下的平面二维水库滑坡涌浪数学模型,与传统固定网格下的数学模型相比,克服了难以精确计算水库滑坡体对水体作用的困难.以一模型试验为研究对象,采用数学模型对其进行了复演,模型将滑坡体对水体的作用采用可变网格的思想实现,使滑坡体所占区域的计算网格随滑体下滑.模型计算值与实测值比较表明,两者吻合较好,说明基于可变网格思想的数学模型能够较准确地模拟滑坡涌浪过程,为滑坡涌浪的计算、预测提供了一种新的研究方法.
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| 关 键 词： | 滑坡 涌浪 水库 可变网格 数学模型 |
| 收稿时间： | 2007-08-08 |
Horizontal 2-D flow model with variable grid for simulating surges due to landslide in reservoirs |
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| YUAN Jing,ZHANG Xiao-feng,ZHANG Wei.Horizontal 2-D flow model with variable grid for simulating surges due to landslide in reservoirs[J].Advances in Water Science,2008,19(4):546-551. |
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| Authors: | YUAN Jing ZHANG Xiao-feng ZHANG Wei |
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| Institution: | 1.Bureau of Hydrology, Changjiang River Water Resources Commission, Wuhan 430010, China;2.State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China |
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| Abstract: | A horizontal 2-D numerical model in moving generalized non-orthogonal curvilinear coordinate is established to simulate surges generated by landslide in reservoirs.Comparing with the models using fixed grid,the difficulty in computing the action of the sliding mass on the water body is overcome.Taking a physical model test as an example,the numerical model is used to simulate the change process of the flow,and in the model,the action of the sliding mass on the water body is calculated by the method of variable grid,and the grid covered by the sliding mass slides down along with the sliding mass.Through the comparison between the numerical results and flume test,it is shown that the numerical results are in good agreement with the laboratory data,which indicates that the numerical model with variable grid can simulate the surge process well and offers a new method for computing and forecasting surge generated by landslide in reservoirs. |
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