On the Boltzmann Diffusion of Two Gases

Details On the Boltzmann Diffusion of Two Gases On the Boltzmann Diffusion of Two Gases

2005-10-19

arxiv.org/abs/math/0510400v1

Mathematics

Analysis of PDEs

20 pages, 2 figures

Scientific paper

We study the Boltzmann equation for a mixture of two gases in one space dimension with initial condition of one gas near vacuum and the other near a Maxwellian equilibrium state. A qualitative-quantitative mathematical analysis is developed to study this mass diffusion problem based on the Green's function of the Boltzmann equation for the single species hard sphere collision model as developed in work of Liu and Yu. The cross species resonance of the mass diffusion and the diffusion-sound wave is investigated. An exponentially sharp global solution is obtained.

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