Title: Role of the diffusion coefficient in one-dimensional convection-diffusion models for sedimentation/thickening in secondary settling tanks
Authors: Verdickt, L. B ×
Voitovich, T. V
Vandewalle, Stefan
Lust, Kurt
Smets, Ilse
Van Impe, Jan #
Issue Date: Oct-2006
Series Title: Mathematical and Computer Modelling of Dynamical Systems vol:12 issue:5 pages:455-468
Abstract: In this paper, the role of the diffusion coefficient in one-dimensional convection - diffusion models for secondary settling tanks is addressed. A simulation analysis is performed using a representative convection - diffusion model to demonstrate the large sensitivity of the model solutions with respect to the value of the diffusion coefficient. In addition, it is illustrated that the numerical behaviour of the model is strongly influenced by the value of the diffusion coefficient. As the results of the simulation study clearly demonstrate the crucial role of the diffusion coefficient in convection - diffusion models, accurate calibration of the diffusion coefficient is of utmost importance when using such models. Therefore, a new closure for the evaluation of a spatially dependent diffusion coefficient is introduced and analysed.
Description: [*]
ISSN: 1387-3954
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Bio- & Chemical Systems Technology, Reactor Engineering and Safety Section
NUMA, Numerical Analysis and Applied Mathematics Section
× corresponding author
# (joint) last author

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