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.
Authors with CRIS profile
Lidia Almazan Torres
Lehrstuhl für Multiscale Simulation of Particulate Systems
Dan Serero
Lehrstuhl für Multiscale Simulation of Particulate Systems
Thorsten Pöschel
Lehrstuhl für Multiscale Simulation of Particulate Systems
Additional Organisation(s)
Involved external institutions
Spain (ES)How to cite
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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