基于元胞自動機的污染物潛水面擴散仿真算法
發(fā)布時間:2019-04-29 06:11
【摘要】:污染物由介質(zhì)進入地下潛水面后,會在飽和帶隨地下水徑流發(fā)生擴散。對該過程進行動態(tài)模擬與評估,可為地下水污染應(yīng)急決策提供可視化手段。以元胞自動機為基礎(chǔ),耦合地下水污染擴散的分子擴散和機械彌散過程模型,構(gòu)建了污染物地下水?dāng)U散的元胞自動機規(guī)則。采用拋物線方程模擬污染源匯項的輸入,在二維平面上通過經(jīng)驗公式推演水動力彌散系數(shù),計算元胞的污染擴散通量。將該方法應(yīng)用到北京密懷順地區(qū),動態(tài)模擬農(nóng)藥在潛水面的擴散過程,具有較好的可視化效果。
[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.
【作者單位】: 中國科學(xué)院大學(xué)資源與環(huán)境學(xué)院;中節(jié)能大地環(huán)境修復(fù)有限公司;內(nèi)江師范學(xué)院計算機科學(xué)學(xué)院;
【基金】:國家環(huán)境保護公益性行業(yè)科研專項(201409030) 北京市自然科學(xué)基金(8172046)資助
【分類號】:TP301.1;X523
本文編號: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.
【作者單位】: 中國科學(xué)院大學(xué)資源與環(huán)境學(xué)院;中節(jié)能大地環(huán)境修復(fù)有限公司;內(nèi)江師范學(xué)院計算機科學(xué)學(xué)院;
【基金】:國家環(huán)境保護公益性行業(yè)科研專項(201409030) 北京市自然科學(xué)基金(8172046)資助
【分類號】:TP301.1;X523
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