基于元胞自动机的污染物潜水面扩散仿真算法
发布时间：2019-04-29 06:11
【摘要】：污染物由介质进入地下潜水面后,会在饱和带随地下水径流发生扩散。对该过程进行动态模拟与评估,可为地下水污染应急决策提供可视化手段。以元胞自动机为基础,耦合地下水污染扩散的分子扩散和机械弥散过程模型,构建了污染物地下水扩散的元胞自动机规则。采用抛物线方程模拟污染源汇项的输入,在二维平面上通过经验公式推演水动力弥散系数,计算元胞的污染扩散通量。将该方法应用到北京密怀顺地区,动态模拟农药在潜水面的扩散过程,具有较好的可视化效果。
[Abstract]:When pollutants enter underground water surface from medium, they will spread along with groundwater runoff in saturated zone. The dynamic simulation and evaluation of the process can provide a visual method for emergency decision-making of groundwater pollution. Based on cellular automata and coupled with molecular diffusion and mechanical diffusion process model of groundwater pollution diffusion, the cellular automata rule of contaminant groundwater diffusion is constructed. The parabolic equation is used to simulate the input of the pollutant source confluence term, and the hydrodynamic dispersion coefficient is derived from the empirical formula on the two-dimensional plane to calculate the pollution diffusion flux of the cell. The method is applied to the Mihuaishun area of Beijing to simulate the diffusion process of pesticides on the surface of submerged water dynamically, which has a good visualization effect.
【作者单位】： 中国科学院大学资源与环境学院;中节能大地环境修复有限公司;内江师范学院计算机科学学院;
【基金】：国家环境保护公益性行业科研专项(201409030) 北京市自然科学基金(8172046)资助
【分类号】：TP301.1;X523
本文编号：2467997
[Abstract]:When pollutants enter underground water surface from medium, they will spread along with groundwater runoff in saturated zone. The dynamic simulation and evaluation of the process can provide a visual method for emergency decision-making of groundwater pollution. Based on cellular automata and coupled with molecular diffusion and mechanical diffusion process model of groundwater pollution diffusion, the cellular automata rule of contaminant groundwater diffusion is constructed. The parabolic equation is used to simulate the input of the pollutant source confluence term, and the hydrodynamic dispersion coefficient is derived from the empirical formula on the two-dimensional plane to calculate the pollution diffusion flux of the cell. The method is applied to the Mihuaishun area of Beijing to simulate the diffusion process of pesticides on the surface of submerged water dynamically, which has a good visualization effect.
【作者单位】： 中国科学院大学资源与环境学院;中节能大地环境修复有限公司;内江师范学院计算机科学学院;
【基金】：国家环境保护公益性行业科研专项(201409030) 北京市自然科学基金(8172046)资助
【分类号】：TP301.1;X523
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