arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0905.4119math.AP
收藏

气相色谱双曲型方程组关于弱极限的强稳定性

Strong Stability with respect to weak limit for a Hyperbolic System arising from Gas Chromatography

Christian Bourdarias, Marguerite Gisclon, Stéphane Junca

摘要:

我们调查一个系统相关的一个特定的等温气固色谱过程,称为?变压吸附?,具有两种物质和瞬时交换动力学。该系统具有线性简并本征值的特殊性:这允许气体混合物的速度传播高频波。在光滑的浓度与一般的等温线的情况下,我们证明了L1稳定的浓度相对于弱限制的入口边界速度。使用前端跟踪算法(FTA),我们证明了一个类似的结果与有界变差(BV)的浓度下的等温线上的一些凸假设。在这两种情况下,我们表明,高频振荡与大幅度的进口速度可以传播,而不影响浓度。

英文摘要:

We investigate a system related to a particular isothermal gas-solid chromatography process, called ?Pressure Swing Adsorption?, with two species and instantaneous exchange kinetics. This system presents the particularity to have a linearly degenerate eigenvalue: this allows the velocity of the gaseous mixture to propagate high frequency waves. In case of smooth concentrations with a general isotherm, we prove L1 stability for concentrations with respect to weak limits of the inlet boundary velocity. Using the Front Tracking Algorithm (FTA), we prove a similar result for concentrations with bounded variation (BV) under some convex assumptions on the isotherms. In both cases we show that high frequency oscillations with large amplitude of the inlet velocity can propagate without affecting the concentrations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑