Turbulence theories and statistical closure approaches

Y Zhou - Physics Reports, 2021 - Elsevier
When discussing research in physics and in science more generally, it is common to ascribe
equal importance to the three components of the scientific trinity: theoretical, experimental …

The local wavenumber model for computation of turbulent mixing

S Kurien, N Pal - … Transactions of the Royal Society A, 2022 - royalsocietypublishing.org
We present an overview of the current status in the development of a two-point spectral
closure model for turbulent flows, known as the local wavenumber (LWN) model. The model …

Tensor calculus in spherical coordinates using Jacobi polynomials. Part-I: mathematical analysis and derivations

GM Vasil, D Lecoanet, KJ Burns, JS Oishi… - Journal of Computational …, 2019 - Elsevier
This paper presents a method for accurate and efficient computations on scalar, vector and
tensor fields in three-dimensional spherical polar coordinates. The method uses spin …

A spectral model for homogeneous shear-driven anisotropic turbulence in terms of spherically averaged descriptors

V Mons, C Cambon, P Sagaut - Journal of Fluid Mechanics, 2016 - cambridge.org
A nonlinear spectral model in terms of spherically averaged descriptors is derived for the
prediction of homogeneous turbulence dynamics in the presence of arbitrary mean-velocity …

Two-point spectral model for variable-density homogeneous turbulence

N Pal, S Kurien, T Clark, D Aslangil, D Livescu - Physical Review Fluids, 2018 - APS
We present a study of buoyancy-driven variable-density homogeneous turbulence, using a
two-point spectral closure model. We compute the time-evolution of the spectral distribution …

Anisotropic triadic closures for shear-driven and buoyancy-driven turbulent flows

C Cambon, V Mons, BJ Gréa, R Rubinstein - Computers & Fluids, 2017 - Elsevier
We show how two-point turbulence models based on triadic closures, initially developed for
homogeneous isotropic turbulence, can be applied to anisotropic turbulent flows. Efficient …

Influence of zero-modes on the inertial-range anisotropy of Rayleigh-Taylor and unstably stratified homogeneous turbulence

O Soulard, BJ Gréa - Physical Review Fluids, 2017 - APS
The purpose of this work is to study the anisotropic properties of the inertial range of
Rayleigh-Taylor and unstably stratified homogeneous (USH) turbulence. More precisely, we …

Large-scale structure of velocity and passive scalar fields in freely decaying homogeneous anisotropic turbulence

K Yoshimatsu, Y Kaneda - Physical Review Fluids, 2018 - APS
We consider freely decaying homogeneous anisotropic turbulence whose energy spectrum
E (k) at k→ 0 is given by E (k)= C k 2+ o (k 2) at an initial instant, where k is the wave number …

Modal Projection for Quasi-Homogeneous Anisotropic Turbulence

Y Zhu, C Cambon - Atmosphere, 2023 - mdpi.com
This article, or essay, addresses the anisotropic structure and the dynamics of quasi-
homogeneous, incompressible turbulence. Modal projection and expansions in terms of …

Generation of anisotropy in turbulent flows subjected to rapid distortion

TT Clark, S Kurien, R Rubinstein - Physical Review E, 2018 - APS
A computational tool for the anisotropic time-evolution of the spectral velocity correlation
tensor is presented. We operate in the linear, rapid distortion limit of the mean-field-coupled …