Abstract
Experimental assessment of solute dispersion in stratified porous media
Highlights
Natural soils and aquifers often possess very complex spatial patterns of hydraulic conductivity (Nakagawa et al, 2012; Zinn et al, 2004), leading to dispersive mixing of solutes
Lon‐ gitudinal dispersivity of the stratified cases as a function of travel distance of the center of mass is shown in Figure 2(a) together with the analytical solution provided by Mercado (1967)
The purpose of this study was to evaluate the effects of the stratified structure on solute dispersion
Summary
Natural soils and aquifers often possess very complex spatial patterns of hydraulic conductivity (Nakagawa et al, 2012; Zinn et al, 2004), leading to dispersive mixing of solutes. In par‐ ticular, solute dispersion in stratified porous media has been studied frequently (Bolster et al, 2011; Gelhar et al, 1979; Güven et al, 1984; Mercado, 1967; Zavala-Sanchez et al, 2009) because natural sandy aquifers often exhibit geologi‐ cal stratification characterized by a much larger horizontal than vertical correlation length. These studies have pro‐ vided the foundation for the quantification of the dispersiv‐ ity and the dispersion coefficient within stratified media. One cause for this might be the difficulty of carrying out field tests on a routine basis
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