Simulating squirmers with multiparticle collision dynamics

TL;DR

This paper reviews the use of multiparticle collision dynamics to simulate the hydrodynamics of spherical microswimmers, called squirmers, in viscous fluids, highlighting its application to active matter modeling.

Contribution

It provides a comprehensive overview of applying multiparticle collision dynamics to model and analyze the motion of spherical squirmers in viscous fluids, expanding its use beyond passive particles.

Findings

Demonstrates the effectiveness of MPCD in simulating squirmer dynamics.

Highlights thermal noise effects in microswimmer simulations.

Discusses potential for studying collective behavior of active particles.

Abstract

Multiparticle collision dynamics is a modern coarse-grained simulation technique to treat the hydrodynamics of Newtonian fluids by solving the Navier-Stokes equations. Naturally, it also includes thermal noise. Initially it has been applied extensively to spherical colloids or bead-spring polymers immersed in a fluid. Here, we review and discuss the use of multiparticle collision dynamics for studying the motion of spherical model microswimmers called squirmers moving in viscous fluids.