TY - GEN
T1 - Relating solute and gas dispersion in granite at different transport velocities
AU - Pugliese, L.
AU - Poulsen, T. G.
AU - Straface, S.
N1 - Copyright:
Copyright 2013 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - Dispersion is a key process controlling gas and solute transport in porous media. Performing dispersion tracer tests for solutes is generally much more time consuming than for gases. Ability to estimate solute dispersion based on gas dispersion data is therefore advantageous. The aim of this study was to investigate the relationship between solute and gas dispersion in selected porous media to develop a procedure for estimating solute dispersion from gas dispersion. Solute (NaCl) and gas (O2) breakthrough curves were measured at different fluid (water and gas) velocities (at identical Reynolds numbers for the two fluids). A commercial crushed granite, available in multiple particle sizes, was used as porous medium. NaCl and O2 dispersion coefficients were determined from measured breakthrough data and used to calculate solute and gas dispersivity as a function of particle size (Dm) and particle size range (R). Both solute and gas dispersivity increased with increasing R, and decreasing Dm. A simple relationship between dispersivities was found.
AB - Dispersion is a key process controlling gas and solute transport in porous media. Performing dispersion tracer tests for solutes is generally much more time consuming than for gases. Ability to estimate solute dispersion based on gas dispersion data is therefore advantageous. The aim of this study was to investigate the relationship between solute and gas dispersion in selected porous media to develop a procedure for estimating solute dispersion from gas dispersion. Solute (NaCl) and gas (O2) breakthrough curves were measured at different fluid (water and gas) velocities (at identical Reynolds numbers for the two fluids). A commercial crushed granite, available in multiple particle sizes, was used as porous medium. NaCl and O2 dispersion coefficients were determined from measured breakthrough data and used to calculate solute and gas dispersivity as a function of particle size (Dm) and particle size range (R). Both solute and gas dispersivity increased with increasing R, and decreasing Dm. A simple relationship between dispersivities was found.
UR - http://www.scopus.com/inward/record.url?scp=84885993771&partnerID=8YFLogxK
U2 - 10.1061/9780784412992.259
DO - 10.1061/9780784412992.259
M3 - 会议稿件
AN - SCOPUS:84885993771
SN - 9780784412992
T3 - Poromechanics V - Proceedings of the 5th Biot Conference on Poromechanics
SP - 2202
EP - 2211
BT - Poromechanics V - Proceedings of the 5th Biot Conference on Poromechanics
Y2 - 10 July 2013 through 12 July 2013
ER -