Lift force in odd compressible fluids

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Ruben Lier - , Max-Planck-Institute for the Physics of Complex Systems, University of Amsterdam (Author)
  • Charlie Duclut - , Max-Planck-Institute for the Physics of Complex Systems, Institut Curie (Author)
  • Stefano Bo - , Max-Planck-Institute for the Physics of Complex Systems, King's College London (KCL) (Author)
  • Jay Armas - , University of Amsterdam (Author)
  • Frank Jülicher - , Max-Planck-Institute for the Physics of Complex Systems, Center for Systems Biology Dresden (CSBD), TUD Dresden University of Technology, Würzburg-Dresden Cluster of Excellence ct.qmat (Author)
  • Piotr Surówka - , University of Amsterdam, Wrocław University of Science and Technology (Author)

Abstract

When a body moves through a fluid, it can experience a force orthogonal to its movement called lift force. Odd viscous fluids break parity and time-reversal symmetry, suggesting the existence of an odd lift force on tracer particles, even at vanishing Reynolds numbers and for symmetric geometries. It was previously found that an incompressible odd fluid cannot induce lift force on a tracer particle with no-slip boundary conditions, making signatures of odd viscosity in the two-dimensional bulk elusive. By computing the response matrix for a tracer particle, we show that an odd compressible fluid can produce an odd lift force. Using shell localization, we provide analytic expressions for the drag and odd lift forces acting on the tracer particle in a steady state and also at finite frequency. Importantly, we find that the existence of an odd lift force in a steady state requires taking into account the nonconservation of the fluid mass density due to the coupling between the two-dimensional surface and the three-dimensional bulk fluid.

Details

Original languageEnglish
Article numberL023101
JournalPhysical Review E
Volume108
Issue number2
Publication statusPublished - Aug 2023
Peer-reviewedYes

External IDs

PubMed 37723786