Results 11 to 20 of about 60,257 (227)

Developing homogeneous isotropic turbulence [PDF]

open access: yesPhysica D: Nonlinear Phenomena, 2012
We investigate the self-similar evolution of the transient energy spectrum which precedes the establishment of the Kolmogorov spectrum in homogeneous isotropic turbulence in three dimensions using the EDQNM closure model. The transient evolution exhibits self-similarity of the second kind and has a non-trivial dynamical scaling exponent which results ...
Bos, Wouter J. T.   +2 more
openaire   +3 more sources

Bragg crystal monochromators

open access: yesMajor Reference Works, Page 290-301., 2021
International Tables for Crystallography is the definitive resource and reference work for crystallography and structural science.

Each of the eight volumes in the series contains articles and tables of data relevant to crystallographic research and to applications of crystallographic methods in all sciences concerned with the ...
John P. Sutter C. Chantler   +2 more
wiley  

+1 more source

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

Spectrum of Reynolds stress for anisotropic turbulence and Taylor expansion of small-scale velocity [PDF]

open access: yesEPJ Web of Conferences
Solution of the small-scale velocity transport equation for incompressible fluid in anisotropic turbulence as Taylor series in time is used for obtaining of explicit expression for the Reynolds Stress spectra.
Balonishnikov Alexander
doaj   +1 more source

A modified Lin equation for the energy balance in isotropic turbulence

open access: yesTheoretical and Applied Mechanics Letters, 2020
: At sufficiently large Reynolds numbers, turbulence is expected to exhibit scale-invariance in an intermediate (“inertial”) range of wavenumbers, as shown by power law behavior of the energy spectrum and also by a constant rate of energy transfer ...
W.D. McComb
doaj   +1 more source

Anisotropic Characteristics of Turbulence Dissipation in Swirling Flow: A Direct Numerical Simulation Study

open access: yesAdvances in Mathematical Physics, 2015
This study investigates the anisotropic characteristics of turbulent energy dissipation rate in a rotating jet flow via direct numerical simulation. The turbulent energy dissipation tensor, including its eigenvalues in the swirling flows with different ...
Xingtuan Yang   +5 more
doaj   +1 more source

AD/RANS Simulations of Wind Turbine Wake Flow Employing the RSM Turbulence Model: Impact of Isotropic and Anisotropic Inflow Conditions

open access: yesEnergies, 2019
The Reynolds-averaged Navier−Stokes (RANS)-based generalized actuator disc method along with the Reynolds stress model (AD/RANS_RSM) is assessed for wind turbine wake simulation.
Linlin Tian   +4 more
doaj   +1 more source

High speed stereoscopic PIV investigation of the statistical characteristics of the axially restricted turbulent swirl flow behind the axial fan in pipe

open access: yesAdvances in Mechanical Engineering, 2022
Investigation of the turbulent swirl flow in the piping system is one of the most complex investigations in the field of energetics and turbulence. Axial fans in a pipe, without guide vanes, are widely used in practice and the problem of their duty point
Đorđe S Čantrak, Novica Z Janković
doaj   +1 more source

Temporal decorrelations in compressible isotropic turbulence [PDF]

open access: yesPhysical Review E, 2013
Temporal decorrelations in compressible isotropic turbulence are studied using the space-time correlation theory and direct numerical simulation. A swept-wave model is developed for dilatational components while the classic random sweeping model is proposed for solenoidal components.
Li, Dong, Zhang, Xing, He, Guowei
openaire   +3 more sources

Energy Transfer in Isotropic Turbulence [PDF]

open access: yesThe Physics of Fluids, 1963
Energy transfer from large to small eddies at three stations in turbulence behind a square mesh is determined by measuring the rates of change and viscous dissipation of the spectrum and the results are compared with a theoretical prediction. Large eddies for which viscous dissipation is negligible satisfy a similarity relation which agrees with the ...
openaire   +2 more sources

Home - About - Disclaimer - Privacy