Equilibrium and nonequilibrium statistics in inhomogeneous and unsteady turbulence

Wouter J.T. Bos; Ryo Araki

doi:10.1103/PhysRevFluids.10.044603

Equilibrium and nonequilibrium statistics in inhomogeneous and unsteady turbulence

Wouter J.T. Bos, Ryo Araki

Department of Mechanical and Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

We model the turbulent kinetic energy of an arbitrary turbulent flow as an equilibrium plus a perturbation. Subsequently, perturbation theory is applied to understand the nature of both temporal and spatial fluctuations in either unsteady or inhomogeneous flows. The models are assessed using numerical simulations of the three-dimensional Kolmogorov flow. Implications for the formulation of turbulence models are discussed.

Original language	English
Article number	044603
Journal	Physical Review Fluids
Volume	10
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevFluids.10.044603
Publication status	Published - Apr 2025

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Equilibrium and nonequilibrium statistics in inhomogeneous and unsteady turbulence

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