Relating Solute And Gas Dispersion In Gravel At
Different Transport Velocities
Author(s)
L. Pugliese, T. G. Poulsen & S. Straface
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.
Keywords: solute dispersion, gas dispersion, dispersivity ratio, porous medium,
Reynolds number, particle size range.
Keywords
Keywords: solute dispersion, gas dispersion, dispersivity ratio, porous medium,
Reynolds number, particle size range.
Related Book
Other papers in this volume
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