Dissipative effects in odd viscous Stokes flow around a single sphere

Abstract

Odd viscosity (OV) is a transport coefficient in, for example, fluids of self-spinning (active) particles or electrons in an external magnetic field. The key feature of OV is that it does not contribute to dissipation in two spatial dimensions. In contrast, we explicitly show that in the three-dimensional case, OV can contribute indirectly to dissipation by modifying the fluid flow. We quantify the dissipation rate of a single spherical particle moving through a fluid with OV via an exact analytical solution of the generalised stationary creeping flow equations. Our results provide a novel way to quantify the effects of OV by measuring the solid-body motion of a single spherical particle. Moreover, we explicitly demonstrate how complex fluids can be designed in terms of their rheological properties by mixing passive particles with self-spinning active particles.

arXiv comment7 pages, 2 figures, Supplemental Material can be found under ancillary files. v3: corrected an error in the expression for the rotational-rotational mobility tensor. This has been published as an erratum, see Phys. Rev. Lett. 133, 039902 (2024), which has been incorporated in the main text here

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• Dumbbell dimer dynamics in three-dimensional chiral fluids
• Stokes flow in an electronic fluid with odd viscosity
• Linear odd electrophoresis of a sphere in a charged chiral active fluid