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Choosing Hydrodynamic Fields

Published online by Cambridge University Press:  18 July 2011

J. W. Dufty  and
J. J. Brey
J. W. Dufty*
Affiliation:
Department of Physics, University of Florida, Gainesville, FL 32611, USA
J. J. Brey
Affiliation:
Física Teórica, Universidad de Sevilla, Apartado de Correos 1065, E-41080 Sevilla, Spain
*
⋆Corresponding author. E-mail: dufty@phys.ufl.edu
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Abstract

Continuum mechanics (e.g., hydrodynamics, elasticity theory) is based on the assumptionthat a small set of fields provides a closed description on large space and time scales.Conditions governing the choice for these fields are discussed in the context of granularfluids and multi-component fluids. In the first case, the relevance of temperature orenergy as a hydrodynamic field is justified. For mixtures, the use of a total temperatureand single flow velocity is compared with the use of multiple species temperatures andvelocities.

Keywords

granular gaskinetic equations equationshydrodynamics
Type
Research Article
Information
Mathematical Modelling of Natural Phenomena , Volume 6 , Issue 4: Granular hydrodynamics , 2011 , pp. 19 - 36
Copyright
© EDP Sciences, 2011

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