Flow field disturbance due to point viscosity variations in a heterogeneous fluid

Research output: Working paperWorking Paper/Preprint

Abstract

We derive the flow field disturbance produced by point viscosity variations in a heterogeneous fluid when subject to a background flow while neglecting fluid inertia. The disturbance flow field is found to be identical to that generated by a force-dipole called stresslet. Using a combination of theory and numerical simulations, we show how the hydrodynamics of an active rigid particle is altered due to the presence of point viscosity variations, and how this can be exploited to manipulate and steer them in microfluidic environments.
Original languageEnglish
Place of PublicationIthaca, NY
Pages1-21
Number of pages21
DOIs
Publication statusPublished - 24 Mar 2022

Keywords

  • heterogeneous fluid
  • flow
  • inertia
  • microfluidic environments

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