Mesoscale simulation model for odd fluids

TL;DR

This paper introduces a coarse-grained simulation method for odd fluids with broken time-reversal symmetry, capturing their unique transport properties and enabling large-scale studies of their complex behaviors.

Contribution

It develops an efficient mesoscale simulation approach based on microscopic kinetic theory, accurately modeling odd fluid transport phenomena.

Findings

Derived analytical transport coefficients for the mesoscale odd fluid.

Validated the simulation approach through comparison with theoretical calculations.

Explored transport phenomena under various external drivings.

Abstract

A fluid, with broken time-reversal symmetry, would exhibit odd transport coefficients, such as odd viscosity, thermal conductivity and diffusion coefficient, which may fundamentally alter the fluid properties and significantly influence the structure and dynamics of immersed objects. Here, we develop an efficient coarse-grained simulation approach for the odd fluid, that captures all essential features of real odd fluids. Based on microscopic kinetic theory, we analytically derive the transport coefficients of the mesoscale odd fluid. Furthermore, we validate our approach by performing both simulations and theoretical calculations to explore the intricate transport phenomena of the odd fluid under various external drivings. Our work thus paves the way for studying anomalous transport in odd fluids and for large-scale simulations of odd complex fluids.