| 考虑河岸变形的三维水沙数值模拟研究 |
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| 引用本文： | 假冬冬,邵学军,王虹,周刚.考虑河岸变形的三维水沙数值模拟研究[J].水科学进展,2009,20(3):311-317. |
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| 作者姓名： | 假冬冬 邵学军 王虹 周刚 |
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| 作者单位： | 清华大学水沙科学与水利水电工程国家重点实验室, 北京, 100084 |
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| 基金项目： | 国家自然科学基金，国家科技支撑计划 |
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| 摘 要： | 将粘性河岸崩塌模拟力学方法与水沙模型相结合,构建了考虑河岸变形的三维数值模型。基于非正交网格,采用局部网格可动技术处理由河岸崩塌引起的河道摆动过程。模型采用有限体积法对方程进行离散,采用与动量插值技术相结合的SIMPLEC算法进行模型求解。通过弯道发展过程的计算表明,模型能够有效地模拟出河道的复杂演变过程。
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| 关 键 词： | 河岸崩塌 三维模型 水沙数值模拟 河床变形 |
| 收稿时间： | 2008-11-11 |
3D mathematical modeling for fluvial processes considering bank erosion |
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| JIA Dong-dong,SHAO Xue-jun,WANG Hong,ZHOU Gang.3D mathematical modeling for fluvial processes considering bank erosion[J].Advances in Water Science,2009,20(3):311-317. |
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| Authors: | JIA Dong-dong SHAO Xue-jun WANG Hong ZHOU Gang |
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| Institution: | State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | A 3D mathematical modeling considering bank erosion is developed by using both a cohesive bank erosion model and a 3D flow-sediment transport model.The locally-adaptive grid system based on the non-orthogonal grid is proposed to simulate the lateral migration in the channel due to the bank erosion.The governing equations for flow-sediment transport are solved with the finite volume method and the SIMPLEC algorithm with the momentum interpolation.The computed case of the self-forming meander evolution demons... |
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| Keywords: | bank erosion 3D mathematical model flow-sediment numerical simulation fluvial processes |
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