Multiparticle collision dynamics in porous media

TL;DR

This paper extends multiparticle collision dynamics (MPCD) to simulate fluid flow in porous media by incorporating a particle-level drag force, enabling the study of complex flows with validated results.

Contribution

The paper introduces a novel extension of MPCD with a particle-level drag force to model transport in porous media, which was not previously addressed.

Findings

The extended MPCD accurately simulates flow through porous channels.

The model shows decreased permeability with increased drag force.

Validation against analytical solutions confirms the method's reliability.

Abstract

Multiparticle collision dynamics (MPCD) 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. Therefore, we extend MPCD to simulate transport in porous media. For this, a particle-level drag force is introduced into the original algorithm. 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.