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The checkerboard model for the Eddy-dispersion in Laminar flows through porous media. Part II: Application to ordered and disordered 2-D flow systems

Journal Contribution - Journal Article

We report on a series of high-accuracy computational fluid dynamics band broadening simulations in three different 2-D flow systems: a 2-D pillar array and 2-D lumped packed bed geometries with different checkerboard velocity bias patterns. These media display a local maximum in the relationship between the eddy-dispersion plate height and the mobile phase velocity. The occurrence of such a dispersion maximum has not been reported before but appears to be a characteristic of regular chromatographic media with alternating velocity bias, at least in 2-D geometries. This newly observed behavior can be fully understood and modelled using the checkerboard model established in part I of the present study. (C) 2020 Elsevier B.V. All rights reserved.
Journal: Journal of chromatography
ISSN: 0021-9673
Volume: 1624
Publication year:2020
Keywords:Eddy-dispersion, Modelling, Band broadening, Packed bed, Column technology
CSS-citation score:1
Accessibility:Open