Size effect on the hydraulic behavior of fluid flow through a single rough-walled fracture

This study provides a numerical approach to evaluate the effect of sample sizes on fluid flow through single rough-walled fracture. The fracture was generated by using mathematical statistics. Its aperture follows normal distribution along large-size plane dimensions 20 m × m, and from this plane, series fractures with different were extracted. Then, two-dimensional (2D) Reynolds equation solved simulate these mean apertures roughness. impact stress hydraulic properties introduced hyperbolic function. simulated results show positive correlation between conductivity sizes. In fact, increases increment size until given which it stays constant. for can then be considered as representative that in larger resulted range 12 16 due variations apertures, roughness stress. addition, also found tends decrease an increase while or increases, since those variables affect topology contact areas, play important role controlling tortuosity connectivity rough