Results 21 to 30 of about 615 (185)

Analysis of Polarimetric Radar Downburst Precursors Using Automated Storm Identification and Tracking [PDF]

open access: yes, 2023
Strong thunderstorm winds produced by downbursts pose a threat to life, property, and aviation, yet they remain challenging to predict in advance. Current operational understanding of radar-based downburst precursors includes a divergent or convergent ...
Gibson, Maci
core  

Numerical Simulation of Characteristics of Wind Field at Bridge Sites in Flat and Gorge Terrains under the Thunderstorm Downburst

open access: yesShock and Vibration, 2021
To investigate the effects of thunderstorm downburst on the characteristics of wind field at bridge sites in flat and gorge terrains, firstly, numerical simulation of wind fields in the flat terrain under the thunderstorm downburst was conducted through ...
Peng Hu   +4 more
doaj   +1 more source

Evaluation of Peak Transmission Line Conductor Reactions Under Downburst Winds Using Optimization and Simplified Approaches

open access: yesFrontiers in Built Environment, 2019
Transmission line structures, though designed per code provisions, have suffered several failures worldwide in the past. As reported in the body of the available literature, more than 80% of those failures are due to severe localized wind events such as ...
Atieh Al-Issa   +5 more
doaj   +1 more source

Frequency Domain Analysis of Alongwind Response and Study of Wind Loads for Transmission Tower Subjected to Downbursts

open access: yesBuildings, 2022
Downburst is one of the high-intensity winds that cause transmission tower failures. The regulations of transmission tower-line systems under downburst wind loads cannot meet the design requirements at present.
Yongli Zhong   +5 more
doaj   +1 more source

Downburst-like experimental measurements of two vertical-axis impinging jets at the WindEEE Dome

open access: yes, 2021
This dataset presents the comprehensive experimental campaign of measurements on downburst-like outflows produced by large-scale impinging jets in the WindEEE Dome simulator at Western University, Canada.
Canepa, Federico   +9 more
core   +1 more source

Numerical Study of the Flow Characteristics of Downburst-like Wind over the 3D Hill Using Different Turbulence Models

open access: yesApplied Sciences, 2023
With the rapid development of computational fluid dynamics (CFD) technology, it has been widely used to study the wind field characteristics of downbursts in mountainous areas.
Bowen Yan   +7 more
doaj   +1 more source

Numerical simulation on load characteristics of transmission tower under downburst and wind-rain conditions

open access: yesZhejiang dianli, 2023
To analyze the response characteristics and failure modes of transmission towers subjected to the combined effects of downbursts and rainstorms, a numerical simulation based on CFD (computational fluid dynamics) is used to investigate the distribution ...
WANG Shaohua   +5 more
doaj   +1 more source

Recent studies on downbursts

open access: yesWind Engineers, JAWE, 1985
Downbursts can be a significant hazard to aviation safety as well as to agricultural activities, structures and buildings on the ground. Major damages on the surface, airline incidents in the past, worns on the mechanism of the downburst occurrence and recent efforts to detect eho downburst are reviewed.
MONJI, Nobutaka, OMOTO, Yukio
openaire   +2 more sources

Study on Wind Loads of Different Height Transmission Towers under Downbursts with Different Parameters

open access: yesBuildings, 2022
Disaster investigation results have shown that most wind-induced damage to transmission towers is related to downbursts. To clarify the effects of downbursts’ parameters on transmission towers with different heights, studies were conducted on five ...
Zhisong Wang   +3 more
doaj   +1 more source

A Simulation Study on Risks to Wind Turbine Arrays from Thunderstorm Downbursts in Different Atmospheric Stability Conditions

open access: yesEnergies, 2021
Thunderstorm downbursts have been reported to cause damage or failure to wind turbine arrays. We extend a large-eddy simulation model used in previous work to generate downburst-related inflow fields with a view toward defining correlated wind fields ...
Nan-You Lu   +3 more
doaj   +1 more source

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