Artículo
When the Hotter Cools More Quickly: Mpemba Effect in Granular Fluids
Autor/es | Lasanta Becerra, Antonio
Vega Reyes, Francisco Prados Montaño, Antonio Santos Reyes, Andrés |
Departamento | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Fecha de publicación | 2017 |
Fecha de depósito | 2018-12-15 |
Publicado en |
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Premios | Premio Mensual Publicación Científica Destacada de la US. Facultad de Física |
Resumen | Under certain conditions, two samples of fluid at different initial temperatures present a counterintuitive behavior known as the Mpemba effect: it is the hotter system that cools sooner. Here, we show that the Mpemba ... Under certain conditions, two samples of fluid at different initial temperatures present a counterintuitive behavior known as the Mpemba effect: it is the hotter system that cools sooner. Here, we show that the Mpemba effect is present in granular fluids, both in uniformly heated and in freely cooling systems. In both cases, the system remains homogeneous, and no phase transition is present. Analytical quantitative predictions are given for how differently the system must be initially prepared to observe the Mpemba effect, the theoretical predictions being confirmed by both molecular dynamics and Monte Carlo simulations. Possible implications of our analysis for other systems are also discussed. |
Agencias financiadoras | Ministerio de Economía y Competitividad (MINECO). España |
Identificador del proyecto | FIS2013-42840-P
FIS2016-76359-P MTM2014-56948-C2-2-P FIS2014-53808-P GR15104 |
Cita | Lasanta Becerra, A., Vega Reyes, F., Prados Montaño, A. y Santos Reyes, A. (2017). When the Hotter Cools More Quickly: Mpemba Effect in Granular Fluids. Physical Review Letters, 119 (14), 148001. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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PhysRevLett.119.148001.pdf | 324.5Kb | [PDF] | Ver/ | |