Results 21 to 30 of about 5,296 (266)

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

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

Local Chemical Gradients in a Mammalian Cortex Measured In Vivo With a Silicon Nanodialysis Mass Spectrometry Platform

open access: yesAngewandte Chemie, EarlyView.
Fluorescence image of the coronal slice of mouse brain where multiple neurochemicals have been measured in vivo with a nanodialysis platform coupled to CE‐MS to reveal strong millimeter‐scale spatial chemical gradients. Formation and maintenance of such local chemical compartments in the otherwise diffusion‐homogeneous cortex indicates strong ...
Weihua Shi   +5 more
wiley   +2 more sources

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

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

Scaling of Second-Order Structure Functions in Turbulent Premixed Flames in the Flamelet Combustion Regime

open access: yesFluids, 2020
The second-order velocity structure function statistics have been analysed using a DNS database of statistically planar turbulent premixed flames subjected to unburned gas forcing.
Peter Brearley   +3 more
doaj   +1 more source

Secondary Flow near an Undulatory Surface Induced by Wall Blocking Effect

open access: yesJournal of Fluid Science and Technology, 2007
Secondary mean motions of Prandtl's second kind near an undulatory surface are explained in terms of the turbulent blocking effect and kinematic boundary conditions at the surface, and the order of magnitude is estimated. The isotropic turbulence is
Kouji NAGATA   +2 more
doaj   +1 more source

Cancellation exponents in isotropic turbulence and magnetohydrodynamic turbulence

open access: yesPhysical Review E, 2019
Small scale characteristics of turbulence such as velocity gradients and vorticity fluctuate rapidly in magnitude and oscillate in sign. Much work exists on the characterization of magnitude variations, but far less on sign oscillations. While averages performed on large scales tend to zero because of the oscillatory character, those performed on ...
Zhai, X. M.   +2 more
openaire   +4 more sources

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

Jackson R. Herring and the Statistical Closure Problem of Turbulence: A Review of Renormalized Perturbation Theories

open access: yesAtmosphere, 2023
The pioneering applications of the methods of theoretical physics to the turbulence statistical closure problem are summarised. These are: the direct-interaction approximation (DIA) of Kraichnan, the self-consistent-field theory of Edwards, and the self ...
David McComb
doaj   +1 more source

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