English

Analytical solution for the hydrodynamic resistance of a disk in a compressible fluid layer with odd viscosity on a rigid substrate

Fluid Dynamics 2026-01-21 v1 Soft Condensed Matter

Abstract

Chiral active fluids can exhibit odd viscosity, a property that breaks the time-reversal and parity symmetries. Here, we examine the hydrodynamic flows of a rigid disk moving in a compressible 2D fluid layer with odd viscosity, supported by a thin lubrication layer of a conventional fluid. Using the 2D Green's function in Fourier space, we derive an exact analytical solution for the flow around a disk of arbitrary size, as well as its resistance matrix. The resulting resistance coefficients break the Onsager reciprocity, but satisfy the Onsager-Casimir reciprocity to any order in odd viscosity.

Keywords

Cite

@article{arxiv.2501.03046,
  title  = {Analytical solution for the hydrodynamic resistance of a disk in a compressible fluid layer with odd viscosity on a rigid substrate},
  author = {Abdallah Daddi-Moussa-Ider and Andrej Vilfan and Yuto Hosaka},
  journal= {arXiv preprint arXiv:2501.03046},
  year   = {2026}
}

Comments

13 pages, 6 figures