How inertial lift affects the dynamics of a microswimmer in Poiseuille flow

@article{Choudhary2022HowIL,
  title={How inertial lift affects the dynamics of a microswimmer in Poiseuille flow},
  author={Akash Choudhary and Subhechchha Paul and Felix R{\"u}hle and Holger Stark},
  journal={Communications Physics},
  year={2022},
  volume={5},
  pages={1-9}
}
  • A. Choudhary, Subhechchha Paul, +1 author H. Stark
  • Published 9 September 2021
  • Physics
  • Communications Physics
The transport of motile microorganisms is strongly influenced by fluid flows that are ubiquitous in biological environments. Here we demonstrate the impact of fluid inertia. We analyze the dynamics of a microswimmer in pressure-driven Poiseuille flow, where fluid inertia is small but non-negligible. Using perturbation theory and the reciprocal theorem, we show that in addition to the classical inertial lift of passive particles, the active nature generates a ‘swimming lift’, which we evaluate… 

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