Transport in Porous Media, Vol.120, No.3, 633-641, 2017
Sediment-Water Interface Flow with the Multiparticle Collision Dynamics
Multiparticle collision dynamics is a relatively new algorithm of fluid flow simulations that has been applied mostly to flows around simple objects. One might ask how it behaves in more complex flows. We extend the basic algorithm to handle flows in porous media. For this, we introduce a particle-level drag force. The force hinders the flow, which results in global resistance to flow and decrease of permeability. The extended algorithm is validated in the flow through a porous channel and compared with an analytical solution. Some basic properties of the solver are investigated. Finally, we use the solver to capture solutions in the sediment-water interface flow.
Keywords:Multiparticle collision dynamics;Particle-based methods;Porous media;Darcy's law;Sediment-water interface