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科技导报  2014 

基于MultiPatch模型的大气污染三维扩散模拟

DOI: 10.3981/j.issn.1000-7857.2014.33.012, PP. 87-90

Keywords: 空气质量评价,高斯污染扩散系统,三维GIS

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Abstract:

垂直尺度上的污染浓度分布状况越来越受到关注,因此三维大气污染模拟具有非常重要的应用价值.结合三维GIS,采用多面模型与高斯烟羽数学模型集成的方式,通过边界值计算、三角条带构建、多面内插与渲染等技术方法,构建了基于三维的高斯污染扩散系统,探讨了污染物迁移规律和三维模型生成算法,并对某工厂含SO2有害气体连续排放过程进行了二维与三维模拟,分析了大气污染物质量浓度空间分布特征,并计算得到该污染源大气污染最大落地点距离为206m.实践表明,采用多面模型表达三维污染物空间分布具有快速、直观的优势,也利于剖面与三维空间分析运算.

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