Simulating Microswimmers under Confinement with Dissipative Particle (hydro)Dynamics

  • Barriuso Gutiérrez, Carlos Miguel (Universidad Complutense de Madrid)
  • Martín Roca, José (Universidad Complutense de Madrid)
  • Vianco, Valentino (Universidad Complutense de Madrid)
  • Pagonabarraga, Ignacio (Universitat de Barcelona)
  • Valeriani, Chantal (Universidad Complutense de Madrid)

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In this work we develop a framework to study active agents with explicit DPD hydrodynamics inspired by the squirmer model. We study the solvent velocity fields and the diffusion and orientation dynamics of an active colloid and the diffusion and radius of gyration of an active polymer embedded in bulk or in cylindrical confinement. This approach allows us to properly deal with thermal fluctuations and microswimmers with complex shapes. We will also present our current work in which we are studying the sedimentation of a microswimmer with mass imbalance under gravity.