Results 71 to 80 of about 33,912 (215)

Scaling properties in the production range of shear dominated flows

, 2005
Recent developments in turbulence are focused on the effect of large scale anisotropy on the small scale statistics of velocity increments. According to Kolmogorov, isotropy is recovered in the large Reynolds number limit as the scale is reduced and, in ...
A. N. Kolmogorov, B. Jacob, C. M. Casciola, P. Gualtieri, R. Piva   +4 more
core   +1 more source

A physical-space version of the stretched-vortex subgrid-stress model for large-eddy simulation [PDF]

, 2000
A physical-space version of the stretched-vortex subgrid-stress model is presented and applied to large-eddy simulations of incompressible flows. This version estimates the subgrid-kinetic energy required for evaluation of the subgrid-stress tensor using
Chan, Daniel C., Pullin, D. I., Voelkl, Tobias   +2 more
core   +2 more sources

Forward and backward multi-particle dispersion in homogeneous isotropic turbulence

Nihon Kikai Gakkai ronbunshu
Turbulent 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, Takuya KITAMURA, Yohei SONOBE, Akihide SAIMOTO, Takeshi NANRI   +4 more
doaj   +1 more source

Streamlines in stationary homogeneous isotropic turbulence and fractal-generated turbulence [PDF]

Fluid Dynamics Research, 2016
We compare streamline statistics in stationary homogeneous isotropic turbulence and in turbulence generated by a fractal square grid. We examine streamline segments characterised by the velocity difference and the distance l between extremum points. We find close agreement between the stationary homogeneous isotropic turbulence and the decay region of ...
Boschung, J, Peters, N, Laizet, S, Vassilicos, JC   +3 more
openaire   +3 more sources

A Review of Black Phosphorus‐Based Materials: From Preparation Strategies to Characterization Techniques

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The structure, properties, preparation methods, and characterization techniques of BP. As a typical 2D layered material, black phosphorus (BP) demonstrates exceptional promise in various fields, particularly in energy storage for alkali metal‐ion batteries. However, its distinctive structure and properties, together with the compositional complexity of
Yunqing Wang, Jinzhi Lyu, Yongxiang Li, Yubing Wang, Xiangming Cui, Jianan Wang, Banglong Wan, Wei Yan   +7 more
wiley   +1 more source

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, Perlekar, Prasad, Sbragaglia, Mauro, Toschi, Federico   +3 more
core  

On velocity structure functions and the spherical vortex model for isotropic turbulence [PDF]

, 2001
We investigate a stochastic model for homogeneous, isotropic turbulence based on Hill's spherical vortex. This is an extension of the method of Synge and Lin [Trans. R. Soc. Can.
Aivazis, Keri A., Pullin, D. I.
core   +1 more source

Helicity statistics in homogeneous and isotropic turbulence and turbulence models [PDF]

Physical Review Fluids, 2017
We study the statistical properties of helicity in direct numerical simulations of fully developed homogeneous and isotropic turbulence and in a class of turbulence shell models. We consider correlation functions based on combinations of vorticity and velocity increments that are not invariant under mirror symmetry. We also study the scaling properties
Ganapati Sahoo, Massimo De Pietro, Luca Biferale   +2 more
openaire   +2 more sources

Impact of Partial Echo on 4D Flow MRI: The Insight From Synthetic MRI

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose The aim of this study is to investigate the impact of the partial echo on 4D flow MRI sequences thanks to in silico coupled MRI‐CFD (computational fluid dynamics) simulations. Methods Two sequences are studied: one with a full echo (FE) and another using partial echo (PE) with an echo symmetry fraction of 0.75.
Morgane Garreau, Thomas Puiseux, Ramiro Moreno, Solenn Toupin, Daniel Giese, Franck Nicoud, Simon Mendez   +6 more
wiley   +1 more source

Bio‐Based Multilayer Composites Based on Blended Electrospun Fibers and Luffa Cylindrica for Enhanced Low‐Frequency Noise Absorption

Journal of Polymer Science, EarlyView.
Bio‐based multilayer composites consisting of Luffa Cylindrica and electrospun microfibers exhibit enhanced sound absorption, shifting peak performance towards lower frequencies. The multilayer configuration improves acoustic wave dissipation, providing a tunable and sustainable solution for urban and traffic‐related noise mitigation.
Paraskevas Kyriacou, Viktoria Theodorou, Michal Matysík, Iveta Plšková, Ivo Kusák, Theodora Krasia‐Christoforou   +5 more
wiley   +1 more source