多组分反应激波问题的移动边界解法  

A moving boundary solution of multicomponent adsorptive-reactive shocks

作　　者：李希[1] 

机构地区：[1]浙江大学化学工程系,杭州310027

出　　处：《水动力学研究与进展（A辑）》2004年第2期190-194,共5页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金资助项目(19672056);(10272095)

摘　　要：　提出了一种求解多组分反应激波问题的简洁方法,即将浓度激波面考虑为分割空间区域的移动边界而以激波间断条件为边界条件,采用简单函数来近似浓度剖面,得到了双组分吸附—反应问题的完整解答。The concentration shocks due to nonlinearity of the adsorption isotherm in reactive chromatographic processes were treated as moving boundaries which cut the spatial domain into separate'smooth' subregions in this paper. The consistency equations on the shocks were taken as boundary conditions. Then, a moving coordinate following the movement of the shocks was introduced and simple trial functions were employed to approximate the concentration profiles in the smooth region. By the method, the model of two components with Lagmuirian adsorption and reversible reactions was greatly simplified to that of four ODEs. A complete solution for the problem was obtained, and characteristics of the shock movement under various conditions were discussed.

关 键 词：多组分反应 激波 移动边界 浓度分布 激波轨迹 双组分吸附 化学流体力学 

分 类 号：O362[理学—流体力学] TQ021[理学—力学]