Simulation of mixing-limited reactions using a continuum approach

Barnard, Jack M. 2017. Simulation of mixing-limited reactions using a continuum approach. Advances in Water Resources 104 , pp. 15-22. 10.1016/j.advwatres.2017.03.012

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Abstract

The limiting of reaction rates in porous media due to the imperfect mixing of reactants is a well studied phenomenon. It has been observed on both the field and laboratory scale and studied using a range of numerical techniques including continuum approaches and Lagrangian particle tracking methods. A new method is presented here for the simulation of mixing-limited reactions using continuum methods, based on the idea of separating each reactant into a mixed and an unmixed fraction, of which only the mixed fraction can react. The method is shown to be capable of producing mixing-limited reaction rates associated with one-, two-, and three-dimensional systems, and of producing outputs well fitted to the experimental data presented in Gramling et al. (2002).

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Uncontrolled Keywords:	Mixing-limited reactions; Porous media; Continuum methods
Publisher:	Elsevier
ISSN:	0309-1708
Date of Acceptance:	13 March 2017
Last Modified:	31 Jan 2020 03:29
URI:	https://orca.cardiff.ac.uk/id/eprint/101870

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