文章基本信息

标题：Velocity distributions in a cooling granular gas
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作者：S. Puri ; S.R. Ahmad
期刊名称：PoS - Proceedings of Science
印刷版ISSN：1824-8039
出版年度：2005
卷号：2005
出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We use event-drivenmolecular dynamics simulations to study a freely-evolving granular gas. The system initially loses energy (or cools) in a homogeneous cooling state (HCS). However, fluctuations in the velocity and density fields grow with time and make the system inhomogeneous. This asymptotic state is referred to as the inhomogeneous cooling state (ICS). In the HCS, the scaled velocity distributions deviate from the Maxwell-Boltzmann (MB) function. However, they revert to the MB form in the ICS.