Next Article in Journal
Investigating the Thermodynamic Performances of TO-Based Metamaterial Tunable Cells with an Entropy Generation Approach
Next Article in Special Issue
Kovacs-Like Memory Effect in Athermal Systems: Linear Response Analysis
Previous Article in Journal
Contact Hamiltonian Dynamics: The Concept and Its Use
Previous Article in Special Issue
Participation Ratio for Constraint-Driven Condensation with Superextensive Mass
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessArticle
Entropy 2017, 19(10), 536;

Hydrodynamics of a Granular Gas in a Heterogeneous Environment

Departamento de Física, Universidad de Extremadura, 06071 Badajoz, Spain
G. Millán Institute, Fluid Dynamics, Nanoscience and Industrial Mathematics, Department of Materials Science and Engineering and Chemical Engineering, Universidad Carlos III de Madrid, 28911 Leganés, Spain
Author to whom correspondence should be addressed.
Received: 21 August 2017 / Revised: 2 October 2017 / Accepted: 9 October 2017 / Published: 11 October 2017
(This article belongs to the Special Issue Thermodynamics and Statistical Mechanics of Small Systems)
Full-Text   |   PDF [773 KB, uploaded 25 October 2017]   |  


We analyze the transport properties of a low density ensemble of identical macroscopic particles immersed in an active fluid. The particles are modeled as inelastic hard spheres (granular gas). The non-homogeneous active fluid is modeled by means of a non-uniform stochastic thermostat. The theoretical results are validated with a numerical solution of the corresponding the kinetic equation (direct simulation Monte Carlo method). We show a steady flow in the system that is accurately described by Navier-Stokes (NS) hydrodynamics, even for high inelasticity. Surprisingly, we find that the deviations from NS hydrodynamics for this flow are stronger as the inelasticity decreases. The active fluid action is modeled here with a non-uniform fluctuating volume force. This is a relevant result given that hydrodynamics of particles in complex environments, such as biological crowded environments, is still a question under intense debate. View Full-Text
Keywords: granular gas; heterogeneous media; hydrodynamics; active matter non-equilibrium granular gas; heterogeneous media; hydrodynamics; active matter non-equilibrium

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
Printed Edition Available!
A printed edition of this Special Issue is available here.

Share & Cite This Article

MDPI and ACS Style

Vega Reyes, F.; Lasanta, A. Hydrodynamics of a Granular Gas in a Heterogeneous Environment. Entropy 2017, 19, 536.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top