Upstream swimming and Taylor dispersion of active Brownian particles
Zhiwei Peng, John F. Brady
Abstract
Recent experimental and theoretical work have shown that active particles in Poiseuille flow exhibit interesting dynamics, including accumulation at the wall and upstream swimming. Furthermore, active particles are known to exhibit nonmonotonic Taylor dispersion as a function of the flow speed. An analytical and numerical investigation shows that the essential physics required to produce upstream swimming and nonmonotonic dispersion are captured by the simple active Brownian particle model.
Topics & Concepts
Taylor dispersionHagen–Poiseuille equationUpstream (networking)Brownian motionDispersion (optics)MechanicsPhysicsBrownian dynamicsFlow (mathematics)Work (physics)Particle (ecology)Classical mechanicsDiffusionOpticsGeologyComputer scienceThermodynamicsQuantum mechanicsComputer networkOceanographyMicro and Nano RoboticsParticle Dynamics in Fluid FlowsLattice Boltzmann Simulation Studies