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Main Title: A mesoscopic approach to diffusion phenomena in mixtures
Author(s): Palumbo, Nunzia
Papenfuss, Christina
Rogolino, Patrizia
Type: Article
Language Code: en
Abstract: The mesoscopic concept is applied to the theory of mixtures. The aim is to investigate the diusion phenomenon from a mesoscopic point of view. The domain of the field quantities is extended by the set of mesoscopic variables, here the velocities of the components. Balance equations on this enlarged space are the equations of motion for the mesoscopic fields. Moreover, local distribution functions of the velocities are introduced as a statistical element, and an equation of motion for this distribution function is derived. From this equation of motion, dierential equations for the diusion fluxes and also for higher order fluxes are obtained. These equations are of balance type, as it is postulated in extended thermodynamics. The resulting evolution equation for the diusion flux generalizes Fick's law.
Issue Date: 2005
Date Available: 15-Oct-2018
DDC Class: 530 Physik
Subject(s): velocity
mesoscopic field
equation of motion
Fick's law
Journal Title: Journal of non-equilibrium thermodynamics
Publisher: De Gruyter
Publisher Place: Berlin
Volume: 30
Issue: 4
Publisher DOI: 10.1515/JNETDY.2005.028
Page Start: 401
Page End: 419
EISSN: 1437-4358
ISSN: 0340-0204
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:Inst. Mechanik » Publications

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