| 基于COHERENS模型的污染物质输运数值模拟 |
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| 引用本文： | 华祖林,顾莉,查玉含,刘晓东.基于COHERENS模型的污染物质输运数值模拟[J].环境科学与技术,2009,32(4). |
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| 作者姓名： | 华祖林 顾莉 查玉含 刘晓东 |
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| 作者单位： | 河海大学环境科学与工程学院浅水湖泊综合治理与资源开发教育部重点试验室,江苏,南京,210098 |
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| 基金项目： | 国家自然科学基金，江苏省自然科学基金，江苏省社会发展科技计划 |
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| 摘 要： | 以COHERENS模型为基础,建立了长江下游感潮河段三维水流及污染物质输运数学模型,该模型通过σ坐标变换,使整个水域垂直方向可采用相同的分层。基于模态分裂法,将三维流动分成表面重力波(外模式)和内重力波(内模式);模型求解技术上采用算子分裂法,使用了superbee限制器TVD格式,减小非物理的数值虚拟震荡。选取长江常熟段为例,模型较好的模拟了感潮河段三维流场及污染带分布特征。该成果对感潮地区污染物输运规律及水污染控制具有指导意义。
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| 关 键 词： | 感潮河段 COHERNES模型 数值模拟 物质输运 |
Numerical Simulation of Three-dimension Flow and Pollutant Transportation of Tidal River Based on COHERENS Model |
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| HUA Zu-lin,GU Li,ZHA Yu-han,LIU Xiao-dong.Numerical Simulation of Three-dimension Flow and Pollutant Transportation of Tidal River Based on COHERENS Model[J].Environmental Science and Technology,2009,32(4). |
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| Authors: | HUA Zu-lin GU Li ZHA Yu-han LIU Xiao-dong |
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| Institution: | Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes of Ministry of Education;School of Environmental Science and Engineering;Hohai University;Nanjing 210098;China |
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| Abstract: | Based on COHERENS model,mathematical model of three-dimensional flow and mass transport in the downstream Yangtze tidal river was established.Through coordinate transformation in the control equations,the same layer grids in vertical direction were used to fit for local topography.Mode-splitting method for surface gravity waves and internal gravity waves was used in the model.The operator splitting method was used to solve the control equations,and TVD scheme with superbee limiter was used to reduce the fic... |
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| Keywords: | tidal river COHERENS model numerical simulation pollutant transportation |
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