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Título

Heat flux of a granular gas with homogeneous temperature

AutorKhalil, Nagi
Palabras claveBoltzmann equation
Kinetic theory of gases and liquids
Transport properties
Fecha de publicación26-oct-2016
EditorInstitute of Physics Publishing
CitaciónJournal of Statistical Mechanics: 103209 (2016)
ResumenA steady state of granular gas with homogeneous granular temperature, no mass flow, and nonzero heat flux is studied. The state is created by applying an external position-dependent force or by enclosing the grains inside a curved 2D silo. At a macroscopic level, the state is identified with one solution to the inelastic Navier–Stokes equations, due to the coupling between the heat flux induced by the density gradient and the external force. In contrast, at the mesoscopic level, by exactly solving a BGK model or the inelastic Boltzmann equation in an approximate way, a one-parametric family of solutions is found. Molecular dynamics simulations of the system in the quasi-elastic limit are in agreement with the theoretical results.
Versión del editorhttp://doi.org/10.1088/1742-5468/2016/10/103209
URIhttp://hdl.handle.net/10261/157483
DOI10.1088/1742-5468/2016/10/103209
ISSN1742-5468
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