Artículo
Stability analysis of the homogeneous hydrodynamics of a model for a confined granular gas
Autor/es | Brey Abalo, José Javier
Buzón Díaz, Vicente García de Soria Lucena, María Isabel Maynar Blanco, Pablo |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2016 |
Fecha de depósito | 2020-05-25 |
Publicado en |
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Resumen | The linear hydrodynamic stability of a model for confined quasi-two-dimensional granular gases is analyzed. The system exhibits homogeneous hydrodynamics, i.e., there are macroscopic evolution equations for homogeneous ... The linear hydrodynamic stability of a model for confined quasi-two-dimensional granular gases is analyzed. The system exhibits homogeneous hydrodynamics, i.e., there are macroscopic evolution equations for homogeneous states. The stability analysis is carried out around all these states and not only the homogeneous steady state reached eventually by the system. It is shown that in some cases the linear analysis is not enough to reach a definite conclusion on the stability, and molecular dynamics simulation results are presented to elucidate these cases. The analysis shows the relevance of nonlinear hydrodynamic contributions to describe the behavior of spontaneous fluctuations occurring in the system, that lead even to the transitory formation of clusters of particles. The conclusion is that the system is always stable. The relevance of the results for describing the instabilities of confined granular gases observed experimentally is discussed. |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España |
Identificador del proyecto | Grant No. FIS2014-53808-P |
Cita | Brey Abalo, J.J., Buzón Díaz, V., García de Soria Lucena, M.I. y Maynar Blanco, P. (2016). Stability analysis of the homogeneous hydrodynamics of a model for a confined granular gas. Physical Review E, 93 (6), 062907-1-062907-9. |
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