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Inelastic Maxwell Models for Dilute Granular Gases

  • Vicente GarzóEmail author
Chapter
Part of the Soft and Biological Matter book series (SOBIMA)

Abstract

Inelastic Maxwell models for dilute granular gases are introduced in this chapter. As with ordinary gases, in these models the collision rate of two colliding particles is independent of their relative velocity. This simplification allows us to exactly evaluate the moments of the Boltzmann collision operator. Consequently, in contrast to the previous chapters where the analytic results for hard spheres have been approximate, the use of Maxwell models opens up the possibility of obtaining the exact forms of the Navier–Stokes transport coefficients for mono- and multicomponent granular gases as well as the rheological properties in sheared granular systems. The purpose of this chapter then is to offer a brief survey on hydrodynamic properties derived in the context of inelastic Maxwell models for systems close to the homogeneous cooling state and for far from equilibrium situations. The results obtained for inelastic Maxwell models will be compared with the theoretical results derived for inelastic hard spheres using analytic approximate methods and the DSMC method. Finally, a surprising “nonequilibrium phase transition” for a sheared binary mixture in the tracer limit will be identified.

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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Departamento de Física and Instituto de Computación Científica Avanzada (ICCAEx)Universidad de ExtremaduraBadajozSpain

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