Effect of non linear sorption on solute transport in a coupled sinusoidal fracture-matrix system

Modeling of solute transport through fractured rock is an important aspect of many disciplines including groundwater contamination, radioactive and nuclear waste disposal. Several studies have been conducted on fracturematrix coupled system using parallel plate model and recently solute and thermal transport has been numerically modeled. The effect of nonlinear sorption has been studied using the sinusoidal fracture geometry. The results suggest as the sorption intensity reduces, the sorption becomes more favorable and the concentration along the fracture reduces. The sorption intensity has a negligible effect with increase in fracture aperture and the sorption of solutes to the fracture surface is significant for large fracture apertures unlike the parallel plate model due to the curvature of the sinusoidal fracture.