Corrections and enhancements of quasi-equilibrium states

Gorban, Alexander N., Karlin, Iliya V., Ilg, Patrick and Öttinger, Hans Christian (2001) Corrections and enhancements of quasi-equilibrium states. Journal of Non-Newtonian Fluid Mechanics, 96, (1-2), 203-219. (doi:10.1016/S0377-0257(00)00135-X).


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We give a compact non-technical presentation of two basic principles for reducing the description of nonequilibrium systems based on the quasi-equilibrium approximation. These two principles are: construction of invariant manifolds for the dissipative microscopic dynamics, and coarse-graining for the entropy-conserving microscopic dynamics. Two new results are presented: first, an application of the invariance principle to hybridization of micro-macro integration schemes is introduced, and is illustrated with non-linear dumbbell models; second, Ehrenfest's coarse-graining is extended to general quasi-equilibrium approximations, which gives the simplest way to derive dissipative equations from the Liouville equation in the short memory approximation.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1016/S0377-0257(00)00135-X
ISSNs: 0377-0257 (print)
Related URLs:
Keywords: non-equilibrium thermodynamics, quasi-equilibrium approximation, invariant manifold, coarse-graining
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Q Science > QC Physics
Divisions : University Structure - Pre August 2011 > School of Engineering Sciences > Thermofluids and Superconductivity
ePrint ID: 49186
Accepted Date and Publication Date:
15 January 2001Published
4 October 1999Submitted
Date Deposited: 26 Oct 2007
Last Modified: 31 Mar 2016 12:26

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