Artículo
Boltzmann kinetic equation for a strongly confined gas of hard spheres
Autor/es | Brey Abalo, José Javier
García de Soria Lucena, María Isabel Maynar Blanco, Pablo |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2017 |
Fecha de depósito | 2020-05-20 |
Publicado en |
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Resumen | A Boltzmann-like kinetic equation for a quasi-two-dimensional gas of hard spheres is derived. The system is confined between two parallel hard plates separated a distance between one and two particle diameters. An entropy ... A Boltzmann-like kinetic equation for a quasi-two-dimensional gas of hard spheres is derived. The system is confined between two parallel hard plates separated a distance between one and two particle diameters. An entropy Lyapunov function for the equation is identified. In addition to the usual Boltzmann expression, it contains a contribution associated to the confinement of the particles. The steady properties of the system agree with equilibrium statistical mechanics results. Equations describing the energy transfer between the degrees of freedom parallel and perpendicular to the confining plates are obtained for some simple initial configurations. The theoretical predictions are compared with molecular dynamics simulation data and a good agreement is found |
Cita | Brey Abalo, J.J., García de Soria Lucena, M.I. y Maynar Blanco, P. (2017). Boltzmann kinetic equation for a strongly confined gas of hard spheres. Physical Review E, 96 (4), 042117-1-042117-9. |
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pub20PhysRevE.96.042117.pdf | 239.3Kb | [PDF] | Ver/ | |