| 浅海点源污染物扩散数值模拟 |
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| 引用本文： | 崔丹,杨中华,槐文信.浅海点源污染物扩散数值模拟[J].武汉大学学报(工学版),2012,45(2):157-160. |
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| 作者姓名： | 崔丹 杨中华 槐文信 |
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| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072 长江科学院,湖北武汉430010
2. 武汉大学水资源与水电工程科学国家重点实验室,湖北武汉,430072 |
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| 摘 要： | 建立了守恒性好且能贴体模拟工程区域的二维潮流-污染物扩散数学模型,采用三角形网格划分计算区域,有限体积法求解控制方程,运用的动边界处理技术能合理地模拟海岸的淹没与出露.利用实测资料对模型进行了验证,模拟结果与实测数据吻合较好,在此基础上对某污水处理厂排放口附近海域的COD浓度分布进行预测计算,其结果为该海域的环境评价提供了科学依据.
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| 关 键 词： | 潮流 化学需氧量(COD) 扩散 数值模拟 |
Numerical simulation of point-sources pollution diffusion in coastal area |
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| CUI Dan,YANG Zhonghua,HUAI Wenxin.Numerical simulation of point-sources pollution diffusion in coastal area[J].Engineering Journal of Wuhan University,2012,45(2):157-160. |
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| Authors: | CUI Dan YANG Zhonghua HUAI Wenxin |
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| Affiliation: | 1 (1.State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University, Wuhan 430072,China;2.Yangtze River Scientific Research Institute,Wuhan 430010,China) |
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| Abstract: | A well-conserved 2D mathematical model that described the pollution diffusion in tide is established.Triangle grids are used to divide the calculation area with body-fitted coordinates;and the finite volume method is applied to discretize the control equation.Also,the application of dynamic boundary technique made the simulation in the mergence and emergence of the coastal reasonable.Numerical results are compared with measured data;and show a good agreement.Based on the model,the concentration distribution of chemical oxygen demand(COD) in a coastal area near outlets of a sewage treatment plant is predicted,so as to provide scientific reference for the environmental assessment of the maritime area. |
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| Keywords: | tide chemical oxygen demand (COD) diffusion numerical simulation |
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