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Molecular dynamics and Enskog theory calculation of shock profiles in a dense hard sphere gas

✍ Scribed by A. Frezzotti

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 574 KB
Volume: 35
Category: Article
ISSN: 0898-1221
DOI: 10.1016/s0898-1221(97)00261-7

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✦ Synopsis

Normal shpck.proflles~in a d~ hard sphere gas are obtained by solving numerically the Enslcog kinetic equation. The res'ults 6~the Enskog theory are compared with "exact" shock profiles obtained from molecular dynamics symulations. It is shown that, at least in the range of the flow pexameters examined, the Enskog equation provides a remarkably good description of the shock propagation.

Keywords--Dense gases, Enskog equation, Molecular dynamics, Monte Carlo methods, Shock waves.

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✍ A. Frezzotti 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 433 KB

The Enskog equation is solved by a numerical method which combines finite difference discretization with Monte Carlo quadrature techniques for the evaluation of the collision integral. The method is applied to the study of two one-dimensional problems in the kinetic theory of a dense hard sphere gas