Artículo
Shear state of freely evolving granular gases
Autor/es | Brey Abalo, José Javier
Ruiz Montero, María José Domínguez Muñoz, Antonio Damián |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2008 |
Fecha de depósito | 2020-05-26 |
Publicado en |
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Resumen | Hydrodynamic equations are used to identify the final state reached by a freely evolving granular gas above
but close to its shear instability. The theory predicts the formation of a two bands shear state with a steady
density ... Hydrodynamic equations are used to identify the final state reached by a freely evolving granular gas above but close to its shear instability. The theory predicts the formation of a two bands shear state with a steady density profile. There is a modulation between temperature and density profiles as a consequence of the energy balance, the density fluctuations remaining small, without producing clustering. Moreover, the time dependence of the velocity field can be scaled out with the squared root of the average temperature of the system. The latter follows the Haff law, but with an effective cooling rate that is smaller than that of the free homogeneous state. The theoretical predictions are compared with numerical results for inelastic hard disks obtained by using the direct Monte Carlo simulation method, and a good agreement is obtained for low inelasticity. |
Agencias financiadoras | Ministerio de Educación y Ciencia (MEC). España |
Identificador del proyecto | Grant No. FIS2008-01339 |
Cita | Brey Abalo, J.J., Ruiz Montero, M.J. y Domínguez Muñoz, A.D. (2008). Shear state of freely evolving granular gases. Physical Review E, 78 (4), 041301-1-041301-9. |
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