Results 31 to 40 of about 201 (159)

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.
Nobutaka MONJI, Yukio OMOTO
openaire   +2 more sources

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

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

Analytical model of high-voltage transmission line subjected to the downburst wind with rainfall

open access: yesAdvances in Mechanical Engineering, 2015
There have been many reports recently on unanticipated galloping and collapse accidents of tower-line systems due to downburst wind with rainfall. Although wet downburst is characterized by high-velocity wind with rainfall, very little research work is ...
Chao Zhou, Yibing Liu
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

Mesoscale analysis of a downburst process in Yichang three gorges dam area on 29 July 2017

open access: yes暴雨灾害, 2023
Based on conventional observation data, regional station observation data, EC reanalysis data, FY-2G satellite data, and radar data, a downburst in Yichang on 29 July 2017 was analyzed.
Yu XIA, Fang LI, Miao TANG, Dan YE
doaj   +1 more source

Analysis of early warning of extreme downbursts induced by two supercell storms in the border area between Hebei and Henan Provinces

open access: yes暴雨灾害, 2022
A severe convective weather event that was caused by multiple supercell storms occurred in the border area between the Hebei and Henan provinces at 16-22 Beijing Time of 31 July 2021.
Yitong WANG, Xiuming WANG, Xiaoding YU
doaj   +1 more source

Study on Wind-Induced Response of Transmission Tower-Line System under Downburst Wind

open access: yesBuildings, 2022
Downburst is the main source of extreme wind speed in non-typhoon areas, which has caused a large amount of transmission line damage all over the world.
Zhiyuan Fang   +3 more
doaj   +1 more source

A Random Forest Method to Forecast Downbursts Based on Dual-Polarization Radar Signatures

open access: yesRemote Sensing, 2019
The United States Air Force’s 45th Weather Squadron provides wind warnings, including those for downbursts, at the Cape Canaveral Air Force Station and Kennedy Space Center (CCAFS/KSC).
Bruno L. Medina   +6 more
doaj   +1 more source

Analysis of supercell structure evolution and environmental characteristics of downburst in Guigang City of Guangxi On May 20, 2020

open access: yes暴雨灾害, 2022
Based on the conventional meteorological observation data, Doppler radar data and NCEP reanalysis data, we have conducted an analysis of the structural evolution and environmental characteristics of the downburst in Guigang on 20 May 2020, which was ...
Hong LIANG   +5 more
doaj   +1 more source

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