| 考虑涌潮作用的钱塘江二维泥沙输移数值模拟 |
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| 引用本文： | 潘存鸿,鲁海燕,曾 剑.考虑涌潮作用的钱塘江二维泥沙输移数值模拟[J].水利学报,2011,42(7). |
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| 作者姓名： | 潘存鸿 鲁海燕 曾 剑 |
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| 作者单位： | 浙江省水利河口研究院,浙江杭州,310020 |
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| 基金项目： | 国家自然科学基金项目(10772163,50809062); 国家水体污染控制与治理科技重大专项(2009ZX07424-001); 水利部公益性行业科研专项(201001072); 浙江省自然科学基金项目(Y5080219,Y5100243); 浙江省创新团队建设(2009F20024) |
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| 摘 要： | 钱塘江涌潮前后水位、流速和含沙量等物理量存在突变,给数值模拟带来了很大的困难,常规的数值模型往往不能准确模拟涌潮作用下的泥沙输移。在已建立的二维涌潮数值模型的基础上,应用基于准确Riemann解的Godunov格式建立了二维泥沙数值模型,模型首先检验了纯对流问题,然后模拟了钱塘江涌潮作用下的泥沙输移,计算结果反映了涌潮到达时刻含沙量的突变过程以及涌潮对泥沙输移的影响,揭示了钱塘江河口高含沙区的成因,以及涌潮是钱塘江河口大冲大淤的机理之一。
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| 关 键 词： | 钱塘江 涌潮 泥沙数值模型 Godunov格式 有限体积法 |
2D numerical simulation for sediment transport affected by tidal bore in the Qiantang River |
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| PAN Cun-hong,LU Hai-yan and ZENG Jian.2D numerical simulation for sediment transport affected by tidal bore in the Qiantang River[J].Journal of Hydraulic Engineering,2011,42(7). |
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| Authors: | PAN Cun-hong LU Hai-yan and ZENG Jian |
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| Affiliation: | PAN Cun-hong,LU Hai-yan,ZENG Jian(Zhejiang Institute of Hydraulics and Estuary,Hangzhou 310020,China) |
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| Abstract: | As sudden changes of water level,velocity,sediment concentration and other physical variables before and after the tidal bore in the Qiantang River lead to great difficulty in numerical simulation,the traditional models cannot accurately simulate effect of tidal bore on sediment transport.Based on the existing 2D numerical model for tidal bores,a new 2D sediment numerical model was established by using the Godunov scheme based on exact Riemann solver.The validity of this model was verified by a pure convect... |
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| Keywords: | the Qiantang River tidal bore numerical model for sediment transport Godunov scheme FVM |
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