Experimental study of the immiscible displacement of shear-thinning fluids in pore networks

Imbibition in disordered media

“…We note that the same conclusions can coincidentally be obtained in the case of non-Newtonian fluids [60,262,343]. Only recently there have been some experimental developments on the scale of network model systems [327]. Similarl to three-phase systems [76,96] such work highlights the upscaling problems when the porelevel behaviour varies widely.…”

Numerical and microfluidic pore networks: Towards designs for directed water transport in GDLs

“…Experimental validation has been provided for theoretical pore network models [35][36][37][38][39][40][41][42][43][44][45]. Recently, Berejnov et al [46] presented a lab-on-chip approach to study two-phase transport in porous media, employing microfluidic rapid prototyping fabrication methods in conjunction with fluorescence microscopy to study water transport in pore networks.…”

Correlation of the two-phase flow coefficients of porous media with the rheology of shear-thinning fluids

“…In addition, drainage [22] and imbibition [36] experiments with a shear-thinning non-wetting fluid have revealed that the pore-scale mechanisms and transient flow pattern are affected significantly by the non-Newtonian rheology, as well. The question is whether and how the capillary pressure and relative permeability curves, estimated from unsteady-state experiments are correlated with the fluid rheology, or equivalently, with the rate-dependent shear viscosities of non-Newtonian fluids.…”