摘要
介质中热质输运-反应体系对于热质成矿、污物迁移等十分重要。这里利用热质流体输运动力学模型与石英溶解与沉淀的化学动力学模型,以及多孔介质的本构关系,建立了一个热质输运、反应动力学藕合模型。并使用此模型研究了局部的温度变化和颗粒半径不均一分布对研究区域内温度场和浓度场的变化情况,其结论是它们之间的耦合可能打破系统的平衡,驱使系统长时间持续进行流体输运-反应动力学过程。
Heat and mass transportation and chemical interaction in a hydrothermal system play a pivot role in dynamical processes of ore formation and pollutant migration.In this paper,we have a dynamic model of coupled heat and mass transportation and chemical interaction,by using the dynamic model of heat and mass transportation,chemical interaction in porous media,and the porosity and permeability models on a spherical close pack arrangement of grains.If we known radius distribution of media grains and add the thermal perturbation on the normal thermal gradient,thus it lead to unremitting the dynamics process of heat and mass transportation and chemical interaction in the area.
出处
《物探化探计算技术》
CAS
CSCD
2005年第4期331-334,共4页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
溶解
沉淀
石英
多孔介质
dissolution
precipitation
quartz
porous media
