不流动水与非平衡吸附作用对溶质运移影响的数值模型——MIENESOR

Numerical Simulation Model of Immobile Water and Non Equilibrium Sorption on the Solute Transport—MIENESOR

不流动水与非平衡吸附作用对溶质在孔隙介质中的运移有很大影响,“两点-两区”模型是目前研究不流动水与非平衡吸附作用的较为完善和实用的模型。在溶质运移的“两点-两区”模型的基础上,同时考虑了土壤对溶质的平衡和非平衡吸附作用,开发了MIENESOR数值模型,并给出了基于有限差和有限元法联合的数值解,编制了相应的计算机程序。对MIENESOR数值模型的案例验算表明:该模型能很好地揭示溶质在包气带和含水层中运移的规律,所开发的计算机程序稳定性较强,可用于实际。

Solutes transport in porous media is influenced strongly by immobile water and non-equilibrium sorption. The ＂two-site/two-domain＂ model is a well and practical model for researching immobile water and non-equilibrium sorption at present. However, till now there isn＇t any report about the numerical solution to this model. On the basis of ＂two-site/two-domain＂ model, the authors have developed a numerical model named MIENESOR-Mobile-Immobile ＆ Equilibrium Non-Equilibrium Sorption, which emphasizes the equilibrium and non-equilibrium sorption processes of solutes in the soil. The numerical solution and computer program of MIENESOR is supplied on basis of integration of finite element model and finite difference model. The case study of MIENESOR shows that： this model can reflect transport processes in unsaturated and saturated zone; this model is steady and practical.