| 一个三维水动力学模型及其在水环境中的适用性试验 |
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| 引用本文： | 秦伯强,David K.Stevens.一个三维水动力学模型及其在水环境中的适用性试验[J].水科学进展,2001,12(2):143-152. |
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| 作者姓名： | 秦伯强 David K.Stevens |
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| 作者单位： | 1.中国科学院南京地理与湖泊研究所, 江苏南京210008; |
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| 基金项目： | 中国科学院知识创新项目"太湖流域水环境预警”(KZCX2-311);中国科学院"九五”重点项目(KZ952-S1-220);中国科学院重大项目(KZ951-B1-205-02)的资助. |
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| 摘 要： | 发展了一个三维水动力学模型.该模型在水底磨擦项计算中,采用了流速的平方根法;在湍流扩散系数的估算中,采用了带稳定度函数的参数化方案;对垂直方向上的坐标进行了压缩,引入σ坐标;对时间变量则采用了分离模式技术,即外部模式(快过程)与内部模式(慢过程);而求解外部模式时,采用了显式一隐式格式交错法(ADI),从而使模型不仅计算时间缩短,且可应用于水很深而水平空间尺度很小,又有热力分层的水域中.最后作为该模型的一个实用性试验,选择了美国犹他州East Canyon水库,利用该模型探讨了温跃层对风、人流及出流变化的响应情况.
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| 关 键 词： | 三维水力学模型 水环境 East Canyon水库 |
| 文章编号： | 1001-6791(2001)02-0143-10 |
| 收稿时间： | 2000-08-10 |
| 修稿时间： | 2000年8月10日 |
A Three-dimensional Hydrodynamic Model and Its Applicable Experiment in Water Environmental Research |
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| QIN Bo-qiang,David K. Stevens.A Three-dimensional Hydrodynamic Model and Its Applicable Experiment in Water Environmental Research[J].Advances in Water Science,2001,12(2):143-152. |
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| Authors: | QIN Bo-qiang David K Stevens |
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| Affiliation: | 1.Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China;2.Department of Civil and Environment Engineering, Utah State University, UT84322-4110, Logan, Utah, USA |
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| Abstract: | This paper presents a three-dimensional hydrodynamic model.The bottom friction has used quadratic expression of velocity.In the treatment of vertical turbulent coefficients,the parameterization scheme has been employed with Richardson numbers.A vertical compressed coordinates(σ) was used.With splitting mode technique and alternating direction implicit(ADI)algorithm,the external model is derived by vertically-integrating the momentum equations to solve the change in water surface which feedback the internal model and solve the vertical velocities.Hence this algorithm scheme can save computing time significantly,therefore,this model can be used in deep and small water body,as well as thermocline lakes/reservoirs.Finally,as a example of its application,this model was applied in East Canyon reservoir,Utah,USA.The efficiency of the prediction of thermocline corresponding to the wind forcings and inflow and outflow has been discussed. |
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| Keywords: | three-dimensional hydrodynamic model water environment East Canyon reservoir |
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