| 考虑垂直涡粘系数非均匀分布的太湖风生流准三维数值模型 |
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| 引用本文： | 王惠中,宋志尧,薛鸿超.考虑垂直涡粘系数非均匀分布的太湖风生流准三维数值模型[J].湖泊科学,2001,13(3):233-239. |
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| 作者姓名： | 王惠中 宋志尧 薛鸿超 |
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| 作者单位： | 河海大学海岸及海洋工程研究所 |
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| 摘 要： | 本文在考虑垂向涡粘系数沿水深变化的基础上，采用准三维风生环流数值模式对稳定和不稳定风场作用下的太湖流场进行模拟计算，结果令人满意，从模拟结果的比较中可以得出：垂向涡粘系数沿水深变化对水位的计算影响不大，但对流速的垂向分布和底床切应力的计算有较大影响，因此，考虑垂向涡粘系数沿水深变化的风生流准三维数值模型可较好地模拟太湖三维风生流场。
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| 关 键 词： | 风生流 准三维数值模型 垂向涡粘系数 太湖 水深 |
| 收稿时间： | 2001/3/26 0:00:00 |
| 修稿时间： | 2001年3月26日 |
A Quasi-3D Numerical Model of Wind-Driven Current in Taihu Lake Considering the Variation of Vertical Coefficientof Eddy Viscosity |
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| WANG Huizhong,SONG Zhiyao and XUE Hongchao.A Quasi-3D Numerical Model of Wind-Driven Current in Taihu Lake Considering the Variation of Vertical Coefficientof Eddy Viscosity[J].Journal of Lake Science,2001,13(3):233-239. |
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| Authors: | WANG Huizhong SONG Zhiyao and XUE Hongchao |
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| Institution: | The Institute of Coast and Ocean Engineering, Hohai University, Nanjing 210098, P. R. China,The Institute of Coast and Ocean Engineering, Hohai University, Nanjing 210098, P. R. China and The Institute of Coast and Ocean Engineering, Hohai University, Nanjing 210098, P. R. China |
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| Abstract: | Based on considering the variation of vertical coefficient from bottom to surface, a quasi-3D numerical model was put forward to calculate the wind-driven current, and was applied in Taihu Lake under steady and unsteady winds, respectively, the results were satisfactory. Comparitive studies showed that the influence of the variation of vertical coefficient of eddy viscosity along the water depth is little to the computation results of surface elevation, but it is great to the computation results of the velocity profile and the bed shear-stresses. Therefore, it is needed to consider the variation of vertical eddy viscosity coefficient to simulate the 3D wind-driven circulation in lakes for better simulation. |
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| Keywords: | Wind-driven circulation quasi-3D numerical model vertical coefficient eddy viscosity Taihu Lake |
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