非平衡化学反应界面系统的准热力学分析

本文在几个合理假设下,论证了一个非平衡化学反应流体-流体界面系统在单独流体不失稳的情况下,稳定的界面层化学反应的加入,可以通过耦合使系统呈现一个不稳定区。

A Quasithermodynamic Analysis of Nonequilibrium Fluid-Fluid Reacting Interfaces

It is shown that, under nonequilibrium conditions, the coupling between the process of a stable surface chemical reaction and a hydrodynamic process can induce an onset of convection at the interface between two immiscible Newtonian fluids. A linear analysis on interfacial stability is performed for the fluid-fluid reacting interface of a mone-fluctuating species. The system uniform reference state in space is that of rest. The study is confined to aperiodic regime. For the case where no feedback loop is present in the chemical reaction scheme, unstable mechano-chem-ical regimes are induced possibly by the competition between interfacial chemical and convective processes. The qualitative behavior of the solutions for the dispersion equation is discussed and new conditions for stability are obtained.