Dissipation in turbulent flows

JC Vassilicos - Annual review of fluid mechanics, 2015 - annualreviews.org
This article reviews evidence concerning the cornerstone dissipation scaling of turbulence
theory:, with C ϵ= const., ϵ the dissipation rate of turbulent kinetic energy, and an integral …

The energy cascade in grid-generated non-equilibrium decaying turbulence

PC Valente, JC Vassilicos - Physics of Fluids, 2015 - pubs.aip.org
We investigate non-equilibrium turbulence where the non-dimensionalised dissipation
coefficient C ε scales as C ε∼ R e M m/R e ℓ n with m≈ 1≈ n (Re M and Re ℓ are …

Finite Reynolds number effect on the scaling range behaviour of turbulent longitudinal velocity structure functions

SL Tang, RA Antonia, L Djenidi, L Danaila… - Journal of Fluid …, 2017 - cambridge.org
The effect of large-scale forcing on the second-and third-order longitudinal velocity structure
functions, evaluated at the Taylor microscale is, the closer the exponent is to the value …

A Kármán–Howarth–Monin equation for variable-density turbulence

CCK Lai, JJ Charonko, K Prestridge - Journal of Fluid Mechanics, 2018 - cambridge.org
We present a generalisation of the Kármán–Howarth–Monin (K–H–M) equation to include
variable-density (VD) effects. The derived equation (i) reduces to the original K–H–M …

Efficiency of energy and enstrophy transfers in periodical flows

A De Leo, A Stocchino - Physics of Fluids, 2023 - pubs.aip.org
We apply a coarse-graining technique to understand the efficiency of scale-to-scale
transport of energy and enstrophy in a quasi-two-dimensional weakly turbulent periodic flow …

Liquid transport in scale space

F Thiesset, B Duret, T Ménard, C Dumouchel… - Journal of Fluid …, 2020 - cambridge.org
When a liquid stream is injected into a gaseous atmosphere, it destabilizes and continuously
passes through different states characterized by different morphologies. Throughout this …

An efficient numerical method for the generalised Kolmogorov equation

D Gatti, A Remigi, A Chiarini, A Cimarelli… - Journal of …, 2019 - Taylor & Francis
An efficient algorithm for computing the terms appearing in the Generalised Kolmogorov
Equation (GKE) written for the indefinite plane channel flow is presented. The algorithm …

Dynamical interactions between the coherent motion and small scales in a cylinder wake

F Thiesset, L Danaila, RA Antonia - Journal of fluid mechanics, 2014 - cambridge.org
Most turbulent flows are characterized by coherent motion (CM), whose dynamics reflect the
initial and boundary conditions of the flow and are more predictable than that of the random …

Transport equation for the isotropic turbulent energy dissipation rate in the far-wake of a circular cylinder

SL Tang, RA Antonia, L Djenidi, Y Zhou - Journal of Fluid Mechanics, 2015 - cambridge.org
Transport equation for the isotropic turbulent energy dissipation rate in the far-wake of a
circular cylinder Page 1 J. Fluid Mech. (2015), vol. 784, pp. 109–129. c Cambridge University …

Transport equations for the normalized nth-order moments of velocity derivatives in grid turbulence

SL Tang, RA Antonia, L Djenidi - Journal of Fluid Mechanics, 2022 - cambridge.org
Transport equations for the normalized moments of the longitudinal velocity derivative Fn+ 1
(here, n is 1, 2, 3...) are derived from the Navier–Stokes (N–S) equations for shearless grid …