Statistical equilibrium of large scales in three-dimensional hydrodynamic turbulence

JB Gorce, E Falcon - Physical Review Letters, 2022 - APS
We investigate experimentally three-dimensional (3D) hydrodynamic turbulence at scales
larger than the forcing scale. We manage to perform a scale separation between the forcing …

[HTML][HTML] Hydrodynamic energy flux in a many-particle system

R Wani, M Verma, S Nirgudkar, S Tiwari - Physics Letters A, 2024 - Elsevier
In this letter, we demonstrate energy transfers and thermalization in an isolated ensemble of
realistic gas particles. We perform a grid-free classical molecular dynamics simulation of two …

Genesis of thermalization in the three-dimensional, incompressible, Galerkin-truncated Euler equation

SD Murugan, SS Ray - Physical Review Fluids, 2023 - APS
The long-time solutions of the Galerkin-truncated three-dimensional, incompressible Euler
equation relax to an absolute equilibrium as a consequence of phase space and kinetic …

Poles, shocks, and tygers: The time-reversible Burgers equation

A Das, P Dutta, V Shukla - Physical Review E, 2024 - APS
We construct a formally time-reversible, one-dimensional forced Burgers equation by
imposing a global constraint of energy conservation, wherein the constant viscosity is …

Hydrodynamic entropy and emergence of order in two-dimensional Euler turbulence

MK Verma, S Chatterjee - Physical Review Fluids, 2022 - APS
Using numerical simulations, we show that the asymptotic states of two-dimensional (2D)
Euler turbulence exhibit large-scale flow structures due to nonzero energy transfers among …