Results 31 to 40 of about 203,668 (343)

Experimental Analysis of Aerodynamic Optimization by Vortex Generators on Wind Turbine Airfoils in Turbulent Flow [PDF]

open access: yesJournal of Applied Fluid Mechanics
Wind turbines often operate under complex turbulent environments owing to factors such as the geographic location and wake interference. It remains unclear whether aerodynamic optimization measures for wind turbine airfoils can remain effective in such ...
S. Lv, W. Li, Y. Jia, H. Liu, Q. Liu
doaj   +1 more source

A New Analytical Wake Model for Yawed Wind Turbines

open access: yesEnergies, 2018
A new analytical wake model for wind turbines, considering ambient turbulence intensity, thrust coefficient and yaw angle effects, is proposed from numerical and analytical studies.
Guo-Wei Qian, Takeshi Ishihara
doaj   +1 more source

Stationary Gas Dynamics and Heat Transfer of Turbulent Flows in Straight Pipes at Different Turbulence Intensity

open access: yesEnergies, 2022
The gas-dynamic and heat-exchange behaviours of air flows in gas-dynamic systems have a significant impact on the efficiency and environmental performance of most technical equipment (heat engines, power plants, heat exchangers, etc.). Therefore, it is a
Leonid Plotnikov   +4 more
doaj   +1 more source

Scale-Resolving Simulations of a Circular Cylinder Subjected to Low Mach Number Turbulent Inflow

open access: yesJournal of Marine Science and Engineering, 2021
Inflow turbulence is relevant for many engineering applications relating to noise generation, including aircraft wings, landing gears, and non-cavitating marine propellers.
Artur K. Lidtke   +2 more
doaj   +1 more source

Load and response analysis of the IEA 22 MW monopile wind turbine considering marine atmospheric turbulence characteristics

open access: yesJournal of Ocean Engineering and Science
Since 2020, offshore wind turbine prototypes have experienced a substantial increase in size. At the same time, wind turbine design standards have not specified requirements for marine atmospheric turbulence.
Feng Guo, Zhen Gao
doaj   +1 more source

Reduction of Oxide Inclusions During the High‐Frequency Welding of Steel via a Nonthermal Ar/H2 Plasma Jet

open access: yesAdvanced Engineering Materials, EarlyView.
High‐frequency (HF) welding of steel is limited by oxide inclusions that degrade weld quality. This study demonstrates, for the first time, the integration of a nonthermal Ar/H2 dielectric barrier discharge (DBD) plasma jet into HF welding. Local plasma treatment provides effective shielding and in‐situ oxide reduction, resulting in markedly fewer and ...
Viktor Udachin   +4 more
wiley   +1 more source

Numerical simulation study on distribution law of respirable dust concentration and its relationship with turbulence intensity in fully mechanized mining face

open access: yesMeikuang Anquan, 2021
By using the fluid dynamics software FLUENT, the 3D numerical simulations of the concentration distribution and motion law of the respirable dust in 22410 fully mechanized mining face of Shendong Halagou Coal Mine were carried out by the two-phase ...
XIANG Xiaogang   +5 more
doaj   +1 more source

Turbulence Hierarchy in a Random Fibre Laser [PDF]

open access: yes, 2017
Turbulence is a challenging feature common to a wide range of complex phenomena. Random fibre lasers are a special class of lasers in which the feedback arises from multiple scattering in a one-dimensional disordered cavity-less medium.
Brum, Arthur A.   +9 more
core   +2 more sources

Thermodynamic Pathways of Nonequilibrium Solidification in Wire‐Arc Additive Manufacturing Fe‐Based Multicomponent Alloy Structures

open access: yesAdvanced Engineering Materials, EarlyView.
Geometry‐driven thermal behavior in wire‐arc additive manufacturing (WAAM) influences microstructural evolution during nonequilibrium solidification of a chemically complex Fe–Cr–Nb–W–Mo–C nanocomposite system. By comparing different deposits configurations, distinct entropy–cooling rate correlations, segregation, and carbide evolution are revealed ...
Blanca Palacios   +5 more
wiley   +1 more source

Novel Detection of Atmospheric Turbulence Profile Using Mie-Scattering Lidar Based on Non-Kolmogorov Turbulence Theory

open access: yesEntropy, 2023
Turbulence can cause effects such as light intensity fluctuations and phase fluctuations when a laser is transmitted in the atmosphere, which has serious impacts on a number of optical engineering application effects and on climate improvement. Therefore,
Jiandong Mao   +5 more
doaj   +1 more source

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