Relating solute and gas dispersion in gravel at different transport velocities

L. Pugliese, T. G. Poulsen, S. Straface

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Dispersion is a key process controlling transport of solutes and gases in porous media. Performing tracer tests for dispersion measurements with solutes is generally much more time consuming compared to used gases. The goal of this study is to estimate the solute dispersion based on gas dispersion measurements to reduce time consumption. Solute (chloride ion) breakthrough curves were measured at different fluid velocities, covering the identical Reynolds range used in a previous study on gas dispersion. Commercial gravel, consisting of solid particles, has been used as a porous medium. Chloride and oxygen dispersion coefficients were determined based on the measured breakthrough data and in turn used to calculate solute and gas dispersivities as a function of the particle size (Dm) and particle size range (R). Solute dispersivity increased with increasing particle size range, in agreement with the previous study. Data showed that dispersivity increases more gradually with decreasing mean diameter.

Original languageEnglish
Title of host publicationComputational Methods in Multiphase Flow VII
EditorsCarlos A. Brebbia, Peter Vorobieff
PublisherWITPress
Pages339-350
Number of pages12
ISBN (Electronic)9781845647346
ISBN (Print)9781845647346
DOIs
StatePublished - 2013
Event7th International Conference on Computational and Experimental Methods in Multiphase and Complex Flow, MPF 2013 - A Coruna, Spain
Duration: 3 Jul 20135 Jul 2013

Publication series

NameWIT Transactions on Engineering Sciences
Volume79
ISSN (Print)1743-3533

Conference

Conference7th International Conference on Computational and Experimental Methods in Multiphase and Complex Flow, MPF 2013
CountrySpain
CityA Coruna
Period3/07/135/07/13

Keywords

  • Dispersivity ratio
  • Gas dispersion
  • Particle size range
  • Porous medium
  • Reynolds number
  • Solute dispersion

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