[STT55-P05] The effect of flowing small particles on flow characteristics and closure of pore in porous media
Keywords:permeability, sand particles, particle method
We investigate the effect of some factors; viscosity of flowing fluid, shape of sand particles, and the velocity of fluid. We found that permeability is dramatically decreased by closure of fluid pass when high viscous fluid flows in porous media. In terms of the shape of sand particles, square grains suppress the probability of closure of flow pass because square particles can change the length of particle orthogonal to flow direction by rotation. On the other hand, the velocity of fluid does not affect the decrease of permeability and the probability of closing so much. The decrease of permeability is almost the same among all velocity situations.