Results 31 to 40 of about 70,297 (251)

Study of Colliding Particle-Pair Velocity Correlation in Homogeneous Isotropic Turbulence

open access: yesApplied Sciences, 2020
This paper deals with the numerical analysis of the particle inertia and volume fraction effects on colliding particle-pair velocity correlation immersed in an unsteady isotropic homogeneous turbulent flow.
Santiago Lain   +2 more
doaj   +1 more source

Distinct Turbulent Regions in the Wake of a Wind Turbine and Their Inflow-Dependent Locations: The Creation of a Wake Map

open access: yesEnergies, 2020
Wind turbines are usually clustered in wind farms which causes the downstream turbines to operate in the turbulent wakes of upstream turbines. As turbulence is directly related to increased fatigue loads, knowledge of the turbulence in the wake and its ...
Ingrid Neunaber   +4 more
doaj   +1 more source

Turbulent Eddy Generation for the CFD Analysis of Hydrokinetic Turbines

open access: yesJournal of Marine Science and Engineering, 2022
This paper presents a novel theoretical and computational methodology for the generation of an onset turbulent field with prescribed properties in the numerical simulation of an arbitrary viscous flow.
Matteo Gregori   +2 more
doaj   +1 more source

Droplet size distribution in homogeneous isotropic turbulence [PDF]

open access: yes, 2011
We study the physics of droplet breakup in a statistically stationary homogeneous and isotropic turbulent flow by means of high resolution numerical investigations based on the multicomponent lattice Boltzmann method.
Federico Toschi   +7 more
core   +2 more sources

Typical form of characteristic function of two-point velocity distribution in homogeneous isotropic turbulence and its extension to the three-point version

open access: yesAIP Advances, 2015
A necessary and sufficient form of two-point velocity characteristic function to embody two-point velocity distribution in turbulence is constructed on the mathematical basis of homogeneity and isotropy.
Iwao Hosokawa
doaj   +1 more source

Wavelet analysis of coherent structures and intermittency in forced homogeneous isotropic turbulence with polymer additives

open access: yesAdvances in Mechanical Engineering, 2017
Large eddy simulation was performed for forced homogeneous isotropic turbulence with/without polymer additives. Wavelet transform in one dimension and two dimensions were performed to investigate the multi-resolution features of coherent structures and ...
Lu Wang   +3 more
doaj   +1 more source

Manifestations of Drag Reduction by Polymer Additives in Decaying, Homogeneous, Isotropic Turbulence [PDF]

open access: yes, 2006
The existence of drag reduction by polymer additives, well established for wall-bounded turbulent flows, is controversial in homogeneous, isotropic turbulence. To settle this controversy we carry out a high-resolution direct numerical simulation (DNS) of
C. Canuto   +5 more
core   +3 more sources

Rotation Rate of Particle Pairs in Homogeneous Isotropic Turbulence [PDF]

open access: yes, 2015
Understanding the dynamics of particles in turbulent flow is important in many environmental and industrial applications. In this paper, the statistics of particle pair orientation is numerically studied in homogeneous isotropic turbulent flow, with ...
Daddi-Moussa-Ider, Abdallah, Ghaemi, Ali
core   +4 more sources

von Kármán-Howarth and Corrsin equations closures through Liouville theorem

open access: yesResults in Physics, 2020
In this communication, the closure formulas of von Kármán-Howarth and Corrsin equations are obtained through the Liouville theorem and the hypothesis of homogeneous isotropic incompressible turbulence.
Nicola de Divitiis
doaj   +1 more source

Triple Decomposition of Velocity Gradient Tensor in Compressible Turbulence

open access: yesFluids, 2021
The decomposition of the local motion of a fluid into straining, shearing, and rigid-body rotation is examined in this work for a compressible isotropic turbulence by means of direct numerical simulations.
Radouan Boukharfane   +3 more
doaj   +1 more source

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