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Título:
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Extension of Haff's cooling law in granular flows
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Autores:
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Brito, Ricardo ;
Ernst, M. H.
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Tipo de documento:
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texto impreso
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Editorial:
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EDP Sciences, 1998-09-01
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Termodinámica
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Tipo = Artículo
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Resumen:
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The total energy E(t) in a fluid of inelastic particles is dissipated through inelastic collisions. When such systems are prepared in a homogeneous initial state and evolve undriven, E(t) decays initially as t^(?2) ~ exp[?2?? ] (known as Haff's law), where “?” is the average number of collisions suffered by a particle within time t, and ? = 1??2 measures the degree of inelasticity, with ? the coefficient of normal restitution. This decay law is extended for large times to E(t) ~ ?^(?d/2) in d dimensions, far into the nonlinear clustering regime. The theoretical predictions are quantitatively confirmed by computer simulations, and hold for small to moderate inelasticities with 0.6
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En línea:
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https://eprints.ucm.es/id/eprint/21474/2/Brito18preprint.pdf
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