Results 1 to 10 of about 203,668 (343)

Turbulence Intensity Scaling: A Fugue [PDF]

open access: yesFluids, 2019
We study streamwise turbulence intensity definitions using smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. Scaling of turbulence intensity with the bulk (and friction) Reynolds number is provided for the definitions.
Nils T. Basse
doaj   +6 more sources

Effect of turbulence intensity and gradient of turbulence intensity on airfoil aerodynamic characteristics at low Reynolds number [PDF]

open access: goldXibei Gongye Daxue Xuebao, 2021
Based on the complex flow field of vertical takeoff and landing (VTOL) aircraft with distributed propulsion, the influence of the turbulence intensity and gradient of turbulence intensity on the aerodynamic characteristics of two-dimensional airfoil ...
Yang Zhang, Zhou Zhou, Xu Li
doaj   +3 more sources

ANALYSING LONGITUDINAL TURBULENCE INTENSITY IN VEGETATED CHANNELS

open access: goldJournal of Agricultural Engineering, 2007
Vegetation altering hydrodynamic conditions of an open channel flow controls the exchanges of sediment, nutrients and contaminants. In this paper the turbulence structure of open-channel flow over a flexible grass vegetation is investigated.
Francesco Giuseppe Carollo   +2 more
doaj   +6 more sources

Automatic Quantification of Atmospheric Turbulence Intensity in Space-Time Domain [PDF]

open access: yesSensors
Quantifying atmospheric turbulence intensity is a challenging task, particularly when assessing real-world scenarios. In this paper, we propose a deep learning method for quantifying atmospheric turbulence intensity based on the space-time domain ...
Damián Gulich   +2 more
doaj   +2 more sources

Turbulence Intensity Modulation by Micropolar Fluids [PDF]

open access: yesFluids, 2021
Fluid microstructure nature has a direct effect on turbulence enhancement or attenuation. Certain classes of fluids, such as polymers, tend to reduce turbulence intensity, while others, like dense suspensions, present the opposite results.
George Sofiadis, Ioannis Sarris
doaj   +2 more sources

Turbulence Intensity and the Friction Factor for Smooth- and Rough-Wall Pipe Flow

open access: yesFluids, 2017
Turbulence intensity profiles are compared for smooth- and rough-wall pipe flow measurements made in the Princeton Superpipe. The profile development in the transition from hydraulically smooth to fully rough flow displays a propagating sequence from the
Nils T. Basse
doaj   +3 more sources

Characteristics of Near Surface Turbulence Intensity before and after Wind Farm Construction

open access: yesGaoyuan qixiang, 2022
The influence of wind farms on atmospheric boundary layer structures, especially turbulence characteristics, is an important topic in the field of wind energy meteorology.Taking Qilinshan Wind Farm in Shangyi County, Hebei Province as the research object,
Xin XIA   +6 more
doaj   +1 more source

Analysis of Dual Polarization Characteristics of Turbulent Structure from Hail Supercell Storms

open access: yesGaoyuan qixiang, 2023
Convective storms transmit momentum through turbulence, so it is important to understand the echo characteristics of turbulence structure in severe convective storms.Focusing on the velocity spectrum width above 5 m·s -1, the turbulent intensity of two ...
Juxiu WU   +3 more
doaj   +1 more source

Propagation Properties of an Astigmatic Cos-Gaussian Beam through Turbulent Atmosphere [PDF]

open access: yesE3S Web of Conferences, 2021
We use the extended Huygens-Fresnel integral to investigate the propagation properties of a cos-Gaussian beam (cosGB) with astigmatism in atmospheric turbulence.
Zhu Kaicheng   +4 more
doaj   +1 more source

A Spectrum Correction Method Based on Optimizing Turbulence Intensity

open access: yesApplied Sciences, 2021
Based on the classical spectral representation method of simulating turbulent wind speed fluctuation, a harmonic superposition algorithm was introduced in detail to calculate the homogeneous turbulence wind field simulation in space. From the view of the
Wenwu Yi   +5 more
doaj   +1 more source

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