有吸附的径向弥散问题  

Radial Transport in Porous Media with Dispersion and Adsorption

作　　者：刘慈群[1] 杨玠[1] 

机构地区：[1]渗流流体力学研究所

出　　处：《水动力学研究与进展（A辑）》1990年第1期122-126,共5页Chinese Journal of Hydrodynamics

摘　　要：本文用Laplace变换数值反演的方法研究了地下流体在第三类边界条件下的径向输运(对流-弥散-吸附)问题。它的简化情况(对流-弥散)与已有的解析解符合得很好。从而说明了用数值反演方法研究它更一般的输运问题将更有效。非均衡吸附使浓度分布延迟。Using the numerical inversion of Laplace transforms, this paper studies the transport equations characterizing dispersion and adsorption for radial porous flow of ground-fluids with the inner third type boundary condition. The accuracy of this numerical inversion model is verified by comparing the calculated results with those obtained by analytical solution for a simple case. The effects of adsorption cause the concentration profile to be delayed and decreased. The numerical inversion method is more efficient. than the analytical method.

关 键 词：LAPLACE变换 弥散 吸附 对流 渗流 

分 类 号：O357.3[理学—流体力学]