期刊论文

Xue, Q.

中文

化工学报

0438-1157

2005

56

5

920-924

10.3321/j.issn:0438-1157.2005.05.034

国家自然科学基金资助项目（ 50309015,50374041）； 国家重点基础研究发展规划项目（2002CB412708）； 武汉市青年科技晨光计划项目（20055003059-33）~~；

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在综合考虑有石油污染物在地下环境体系中扩散、吸附解吸、界面间分配以及微生物降解等作用下,建立了有机污染物在多孔介质迁移转化的多相流动力学模型,并采用特征有限差分方法和隐式压力显式饱和度方法对耦合模型进行数值离散,编制了相应的计算程序;利用该程序对石油污染物在地下环境系统中运移机制进行定量化研究.研究结果表明:石油污染物在地表泄漏以后,将在重力和毛细力的作用下,产生水平位移和垂直位移.当污染物迁移到地下毛细管区后,其向下的运动将整体受到毛细张力的阻碍,污染物要想进入毛细饱和带必须克服油-水界面的进气压力,这时污染物在毛细饱和带顶部聚集以期获取压力,同时将产生以...

A coupled multiphase flow model was established to predict transient flow and petroleum pollutant transport in subsurface environment. The model accounted for the complex process of dispersion, absorption/desorption, distribution between liquid-solid interfaces and microbiological degradation under the assumption of local chemical equilibrium. Solutions of the coupled equations were accomplished by the characteristic finite difference method and implicit pressure explicit saturation method. The code was developed for simulating petroleum pollutant transport and migration mechanism in porous me...