| 溃坝水流数值计算的非结构有限体积模型 |
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| 引用本文： | 宋利祥,周建中,王光谦,王玉春,廖力,谢田.溃坝水流数值计算的非结构有限体积模型[J].水科学进展,2011,22(3):373-381. |
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| 作者姓名： | 宋利祥 周建中 王光谦 王玉春 廖力 谢田 |
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| 作者单位： | 1.华中科技大学水电与数字化工程学院, 湖北武汉430074; |
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| 基金项目： | 国家重点基础研究发展计划(973)资助项目，水利部公益性行业科研专项经费资助项目 |
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| 摘 要： | 针对溃坝洪水数值计算面临不规则边界和复杂地形等问题,建立了三角形网格下求解二维浅水方程的高精度Godunov型有限体积模型.空间上,引入变量重构和限制器技术,采用HLLC近似Riemann算子计算数值通量;时间上,采用Hancock预测-校正法.将底高程定义于单元顶点,结合单元水位～体积关系,提高了干湿界面处理能力.采...
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| 关 键 词： | 溃坝 二维浅水方程 Godunov格式 源项 干湿界面 非结构网格 |
| 收稿时间： | 2010-05-07 |
Unstructured finite volume model for numerical simulation of dam-break flow |
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| SONG Li-xiang,ZHOU Jian-zhong,WANG Guang-qian,WANG Yu-chun,LIAO Li,XIE Tian.Unstructured finite volume model for numerical simulation of dam-break flow[J].Advances in Water Science,2011,22(3):373-381. |
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| Authors: | SONG Li-xiang ZHOU Jian-zhong WANG Guang-qian WANG Yu-chun LIAO Li XIE Tian |
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| Affiliation: | 1.School of Hydropower and Information Engineering, Huazhong University of Science and Technology, Wuhan 430074, China;2.Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | A high-performance Godunov-type finite volume scheme is proposed for numerical simulation of dam-break flow over highly irregular terrain with complex geometries.The scheme is used to solve the two-dimensional shallow water equations on triangular grids.Using the variable reconstruction and limiter techniques,the numerical flux can be calculated with the HLLC(Harten-Lax-van Leer-Contact) solver.The Hancock predictor-corrector method is adopted for time stepping.The bed elevation is assigned to the vertices ... |
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| Keywords: | dam break two-dimensional shallow water equations Godunov scheme source terms wet/dry fronts unstructured grids |
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