| 浅水方程Roe型格式的平衡性 |
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| 引用本文： | 何杰,徐志扬,辛文杰.浅水方程Roe型格式的平衡性[J].河海大学学报(自然科学版),2009,37(4):450-456. |
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| 作者姓名： | 何杰 徐志扬 辛文杰 |
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| 作者单位： | 1. 南京水利科学研究院河流海岸研究所,江苏,南京,210024;南京水利科学研究院水文水资源与水利工程科学国家重点实验室,江苏,南京,210024
2. 南京水利科学研究院河流海岸研究所,江苏,南京,210024;苏州市环境监测中心站,江苏,苏州,215004 |
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| 摘 要： | 采用类似对流项特征向量分解形式分裂底坡源项,证明了浅水方程中底坡源项和压力项的平衡性,有效避免了多变地形下伪流现象的产生.运用该模式对水下地形多变、岛屿星罗棋布的浙江省温岭龙门海域进行了潮流运动模拟,模拟计算结果与水文测验数据拟合程度较好.
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| 关 键 词： | Roe格式 浅水方程 平衡性 伪流 |
| 修稿时间： | 2009/8/10 0:00:00 |
Balance of shallow water equations by use of Roe scheme |
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| HE Jie,XU Zhi-yang,XIN Wen-jie.Balance of shallow water equations by use of Roe scheme[J].Journal of Hohai University (Natural Sciences ),2009,37(4):450-456. |
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| Authors: | HE Jie XU Zhi-yang XIN Wen-jie |
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| Institution: | 1.River and Harbor Engineering Department;Nanjing Hydraulic Research Institute;Nanjing 210024;China;2.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering;3.Suzhou Environmental Monitoring Center;Suzhou 215004;China |
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| Abstract: | The bed slope source term was split in the form of flux eigenvectors.The balance between the source terms and flux gradients in the shallow water equations was proven.False flows were effectively avoided under variable topographies.The motion of the tidal flows in the Longmen Sea area near Wenling in Zhejiang Province with variable topography and many islands was simulated with the model.The computed results agree with the observed data. |
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| Keywords: | Roe scheme shallow water equation balance false flow |
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