Self-organized shocks in the sedimentation of a granular gas

Almazan Torres L, Serero D, Salueña C, Pöschel T (2015)


Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2015

Journal

Book Volume: 91

Article Number: 062214

Journal Issue: 6

DOI: 10.1103/PhysRevE.91.062214

Abstract

A granular gas in gravity heated from below develops a certain stationary density profile. When the heating is switched off, the granular gas collapses. We investigate the process of sedimentation using computational hydrodynamics, based on the Jenkins-Richman theory, and find that the process is significantly more complex than generally acknowledged. In particular, during its evolution, the system passes several stages which reveal distinct spatial regions of inertial (supersonic) and diffusive (subsonic) dynamics. During the supersonic stages, characterized by Mach>1, the system develops supersonic shocks which are followed by a steep front of the hydrodynamic fields of temperature and density, traveling upward.

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APA:

Almazan Torres, L., Serero, D., Salueña, C., & Pöschel, T. (2015). Self-organized shocks in the sedimentation of a granular gas. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 91(6). https://doi.org/10.1103/PhysRevE.91.062214

MLA:

Almazan Torres, Lidia, et al. "Self-organized shocks in the sedimentation of a granular gas." Physical Review E - Statistical, Nonlinear, and Soft Matter Physics 91.6 (2015).

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