A numerical study of the Navier-Stokes transport coefficients for two-dimensional granular hydrodynamics
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Published version
Author(s)
Almazan, Lidia
Carrillo, Jose A
Saluena, Clara
Garzo, Vicente
Poeschel, Thorsten
Type
Journal Article
Abstract
A numerical study that aims to analyze the thermal mechanisms of unsteady, supersonic granular flow by means of hydrodynamic simulations of the Navier-Stokes granular equation is reported in this paper. For this purpose, a paradigmatic problem in granular dynamics such as the Faraday instability is selected. Two different approaches for the Navier-Stokes transport coefficients for granular materials are considered, namely the traditional Jenkins-Richman theory for moderately dense quasi-elastic grains and the improved Garzo-Dufty-Lutsko theory for arbitrary inelasticity, which we also present here. Both the solutions are compared with event-driven simulations of the same system under the same conditions, by analyzing the density, temperature and velocity field. Important differences are found between the two approaches, leading to interesting implications. In particular, the heat transfer mechanism coupled to the density gradient, which is a distinctive feature of inelastic granular gases, is responsible for a major discrepancy in the temperature field and hence in the diffusion mechanisms.
Date Issued
2013-04-25
Citation
NEW JOURNAL OF PHYSICS, 15
ISSN
1367-2630
Publisher
IOP PUBLISHING LTD
Journal / Book Title
NEW JOURNAL OF PHYSICS
Volume
15
Copyright Statement
© IOP Publishing Ltd and Deutsche Physikalische Gesellschaft. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal
citation and DOI.
citation and DOI.
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Description
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Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=000318223400002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
ARTN 043044
Publication Status
Published