Advection-dispersion in symmetric field-flow fractionation channels

Suslov, Sergey A. and Roberts, A. J. (1998) Advection-dispersion in symmetric field-flow fractionation channels. Working Paper. University of Southern Queensland, Faculty of Sciences, Toowoomba, Australia.

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Abstract

We model the evolution of the concentration field of macromolecules in a symmetric field-flow fractionation (FFF) channel by a one-dimensional advection-diffusion equation. The coefficients are precisely determined from the fluid dynamics. This model gives quantitative predictions of the time of elution of the molecules and the width in time of the concentration pulse. The model is rigorously supported by centre manifold theory. Errors of the derived model are quantified for improved predictions if necessary. The advection-diffusion equation is used to find that the optimal condition in a symmetric FFF for the separation of two species of molecules with similar diffusivities involves a high rate of crossflow.


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Item Type: Report (Working Paper)
Item Status: Live Archive
Additional Information: USQ publication.
Depositing User: ePrints Administrator
Faculty / Department / School: Historic - Faculty of Sciences - Department of Maths and Computing
Date Deposited: 26 Mar 2009 10:14
Last Modified: 28 Jun 2012 23:27
Uncontrolled Keywords: field-flow; FFF; field-flow fractionation
Fields of Research (FOR2008): 09 Engineering > 0915 Interdisciplinary Engineering > 091501 Computational Fluid Dynamics
01 Mathematical Sciences > 0103 Numerical and Computational Mathematics > 010399 Numerical and Computational Mathematics not elsewhere classified
01 Mathematical Sciences > 0102 Applied Mathematics > 010207 Theoretical and Applied Mechanics
Socio-Economic Objective (SEO2008): E Expanding Knowledge > 97 Expanding Knowledge > 970101 Expanding Knowledge in the Mathematical Sciences
Identification Number or DOI: SC-MC-9823
URI: http://eprints.usq.edu.au/id/eprint/5102

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