Article
Brownian motion in a granular gas
Author/s | Brey Abalo, José Javier
![]() ![]() ![]() ![]() ![]() ![]() ![]() Ruiz Montero, María José García Rojo, Ramón |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 1999 |
Deposit Date | 2020-05-27 |
Published in |
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Abstract | The dynamics of a heavy particle in a gas of much lighter particles is studied via the Boltzmann-Lorentz equation with inelastic collisions among all particles. A formal expansion in the ratio of gas to tagged particle ... The dynamics of a heavy particle in a gas of much lighter particles is studied via the Boltzmann-Lorentz equation with inelastic collisions among all particles. A formal expansion in the ratio of gas to tagged particle mass transforms the Boltzmann-Lorentz equation into a Fokker Planck equation. The predictions of the latter are tested here using direct Monte Carlo simulation of the Boltzmann-Lorentz equation. Excellent agreement is obtained for the approach to a homogeneous cooling state, the temperature of that state, approach to diffusion, and the dependence of the diffusion constant on dissipation parameters. Some results from molecular-dynamics simulations are also presented and shown to agree with the theoretical predictions. |
Funding agencies | Dirección General de Investigación Científica y Técnica (DGICYT). España |
Project ID. | grant PB98-1124
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Citation | Brey Abalo, J.J., Ruiz Montero, M.J. y García Rojo, R. (1999). Brownian motion in a granular gas. Physical Reiew E, 60 (6), 7174-7181. |
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pubPhysRevE.60.7174.pdf | 107.4Kb | ![]() | View/ | |