Forward and backward multi-particle dispersion in homogeneous isotropic turbulence
Nihon Kikai Gakkai ronbunshuTurbulent diffusion in homogeneous isotropic turbulence is numerically investigated using the direct numerical simulation (DNS). The four-dimensional turbulence database allows us to track fluid particles not only in the forward direction of time but ...
Ryunosuke ARAKAWA +4 more
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The Polymer Effect on Nonlinear Processes in Decaying Homogeneous Isotropic Turbulence
Advances in Mechanical Engineering, 2013 In order to study the polymer effect on the behavior of nonlinearities in decaying homogeneous isotropic turbulence (DHIT), direct numerical simulations were carried out for DHIT with and without polymers.
Wei-Hua Cai +4 more
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Droplet breakup in homogeneous and isotropic turbulence [PDF]
, 2010 This fluid dynamics video shows the breakup of a droplet in a stationary homogeneous and isotropic turbulent flow. We consider droplets with the same density of the transporting fluid.
Biferale, Luca +3 more
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Lagrangian statistics of particle pairs in homogeneous isotropic turbulence [PDF]
, 2005 We present a detailed investigation of the particle pair separation process in homogeneous isotropic turbulence. We use data from direct numerical simulations up to Taylor's Reynolds number 280 following the evolution of about two million passive tracers
A. Celani +10 more
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Kolmogorov's law for two-dimensional electron-magnetohydrodynamic turbulence [PDF]
, 1997 The analogue of the Kolmogorov's four-fifths law is derived for two-dimensional, homogeneous, isotropic EMHD turbulence in the energy cascade inertial range. Direct numerical simulations for the freely decaying case show that this relation holds true for
A Celani +7 more
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A Method for Choosing the Spatial and Temporal Approximations for the LES Approach
Fluids, 2022 Analysis and optimization of the hybrid upwind-central numerical methods for modern versions of large eddy simulations (LESs) are presented herein. Optimization was performed based on examination of the characteristics of the spatial and temporal finite ...
Sergei Bakhne, Vladimir Sabelnikov
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Two-dimensional homogeneous isotropic fluid turbulence with polymer additives [PDF]
Physical Review E, 2015 8 pages, 8 ...
Gupta, Anupam +2 more
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Anomalous scaling in homogeneous isotropic turbulence [PDF]
Journal of Physics A: Mathematical and General, 2001 The anomalous scaling exponents $ _{n}$ of the longitudinal structure functions $S_{n}$ for homogeneous isotropic turbulence are derived from the Navier-Stokes equations by using field theoretic methods to develop a low energy approximation in which the Kolmogorov theory is shown to act effectively as a mean field theory.
openaire +3 more sources
Correlation between large- and small-scale velocity components under Fourier filters
Theoretical and Applied Mechanics Letters, 2014 By introducing the Fourier filters, we analyse the correlation between large- and small-scale velocity components in homogeneous isotropic turbulence theoretically. We show that different Fourier filters act similarly on this multi-scale correlation with
Le Fang
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Simulation of fully resolved finite-size particles in a turbulent flow [PDF]
, 2013 In this study we are interested on the statistics of finite sized particles. A sustained homogeneous isotropic turbulence with particles is numerically simulated in order to obtain those ...
Brandle de Motta, Jorge +3 more
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