热液系统流体输运－化学反应耦合动力学综述

输运－反应模式通过连续质量守恒方程进行描述，它表示为主要组分的Ｎ＋Ｍ个耦合的非线性偏微分方程。这些方程可以通过有限差分或有限元等数值方法进行求解。利用准静态近似法，涉及平流、分子扩散和水动力弥散作用的地球化学系统的演化在时间上通过一系列静止状态模拟出来。模拟实际地质系统的动力学实验对输运－反应耦合动力学的应用具有十分重要的影响。

COUPLED FLUID FLOW AND CHEMICAL REACTION KINETICS IN HYDROTHERMAL SYSTEMS

The model of the flow-reaction is described bycontinuum mass conservation equa tons which can be expressed as N+M coupled,nonlinear partial differential equations for the primary spedes.These equations can be solved using numerical methods based on the finite difference or the finite element.The evolution of a geochemlcal system involving advection,molecular diffusion,and hydrodynamic dispersion can be slmulated with a times-eries of stationary state by adoptingquasi-stationary state approximation,The kinetic experiments sim ulating real geological systems have very important influences on the application of coupled fluid flow and feaction kinetics.