Numerical Modeling of Fluid Flowing Properties through Porous Media with Single Rough Fractures

Due to the existence of pores in fracture surface, permeability pore-fracture media is more complicated, and its law mechanism are worthy an in-depth study. The rough surface this paper obtained by 3D laser scanning technology, taken a small part middle area carry out finite element simulation single seepage, studied distribution flow velocity fields nonlinear characteristics changing inlet rate, thickness, size surface. Given that for same opening, decreases from position both sides. When roughness increases locally, suddenly increases. coefficient as thickness A dual-media model which consists porous matrix was established study seepage through two media. it takes less time reach steady state when greater than fracture. After reaching state, direction fluid consistent with fracture, perpendicular isosurface pore water pressure.