Stochastic evaluation of mixing-controlled steady-state plume lengths in two-dimensional heterogeneous domains

Numerical simulation of isotope fractionation in steady-state bioreactive transport controlled by transverse mixing

“…Various theoretical, numerical, and experimental studies have shown that heterogeneous flow fields enhance transverse mixing and thus mixing-controlled reactions (e.g., Bauer et al, 2009a;Chiogna et al, 2011a;Cirpka et al, 2011Cirpka et al, , 2012Rolle et al, 2009;Werth et al, 2006). Flow focusing in high-permeability zones decreases transverse dispersion lengths and therefore enhances mixing.…”

On the importance of diffusion and compound-specific mixing for groundwater transport: An investigation from pore to field scale

“…At the plume fringe steep concentration gradients of dissolved reactants develop and have been observed at high-resolution monitored field sites (e.g., Amos et al, 2011;Davis et al, 1999;Prommer et al, 2009;Thornton et al, 2001;Tuxen et al, 2006). Insufficient mixing between dissolved reactants is increasingly recognized to control the overall contaminant transformation rates (e.g., Chiogna and Bellin, 2013;Cirpka et al, 2012;Kitanidis, 1994;Sanchez-Vila et al, 2007), and thus, the potential for natural attenuation and the performance of in situ engineered remediation. Therefore, correct characterization and quantification of mixing is of utmost importance to accurately describe reactive solute transport in groundwater.…”

A Critical Analysis of Transverse Dispersivity Field Data

“…In particular, mixing in conjunction with transverse dispersion on one hand and degradation on the other, determine to a large extent the length of reactive plumes (Liedl et al 2005;Cirpka et al 2006Cirpka et al , 2012Maier and Grathwohl 2006;Zarlenga and Fiori 2013). It is due primarily to the difficulty of measuring in detail the transverse concentration profiles required for inferring α T , V with the aid of spatial moments.…”