扰动色谱方程黎曼解的极限-delta激波的行成和转换

本文主要讨论扰动色谱方程delta激波解的行成和转换,并讨论上述方程的黎曼问题.当扰动参数趋于零时,通过研究黎曼解的极限,我们可以观察到如下两个重要现象:激波和接触间断重合行成delta激波,一类激波(一个变量含有delta函数).

Formation and Transition of Delta Shock in the Limits of Riemann Solutions to the Perturbed Chromatography Equations

This paper is concerned with the formation and transition of delta shock solutions to the perturbed chromatography equations. We discuss the Riemann problem for the perturbed chromatography equations. By studying the limits of the Riemann solutions as the perturbation parameter tends to zero, we can observe two important phenomena. One is that a shock and a contact discontinuity coincide to form a delta shock. The second is that the transition from one kind of delta shock on which two state variables simultaneously contain the Dirac delta function,to another kind of delta shock on which only one state variable contains the Dirac delta function.