Results 41 to 50 of about 101,265 (312)

Simulations aux grandes échelles : application au jet transverse [PDF]

, 2005
Depuis plusieurs années, l'industrie des turbines à gaz place au cœur de sa stratégie de recherche les enjeux à la fois environnementaux et économiques tels que : la diminution des polluants et des nuisances sonores et la réduction de consommation du ...
Prière, Céline
core   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Mesoscale Convective Systems over Ecuador: Climatology, Trends and Teleconnections

Atmosphere
Research on Mesoscale Convective Systems (MCSs) in Ecuador has focused on regional studies. However, it lacks a thorough and general examination of their relationship with the nation’s diverse orography and large-scale phenomena.
Leandro Robaina, Lenin Campozano, Marcos Villacís, Amanda Rehbein   +3 more
doaj   +1 more source

Analysis of hydrological and radar echo characteristics for a record-breaking flood event in Qijiang Catchment

暴雨灾害, 2020
Based on weather radar data, precipitation data from densified rainfall stations, hydrological data at Wucha hydrological station in Qijiang Catchment and ERA5 reanalysis data, we have conducted the analysis of a record-breaking flood event occurred in ...
Danhua ZHAI, Yaping ZHANG, Yan ZHU, Zhongju LI, Peng QIU, Chunlei LI   +5 more
doaj   +1 more source

Analysis on the Genesis Mechanism of Freezing Rain and Extreme Heavy Snowstorm under the Background of Cold Cushion

Gaoyuan qixiang, 2023
Based on meteorological observations， Doppler radar observation data of Tongliao station and Chifeng station， climate extreme snowfall and FNL （1°×1°） reanalysis data of NECP every 6h， this paper analyzes the disastrous extreme backflow heavy snowstorm ...
Guilian ZHANG, Zhili HUO, Xueqiang WANG
doaj   +1 more source

Experimental and computational studies of factors affecting impinging jet flowfields [PDF]

, 2009
An experimental and computational study was made of a single circular jet impinging onto a flat ground board. A 1/2" nozzle running at a fixed nozzle pressure ratio of 1.05 was used in the experimental phase (giving an nozzle exit Reynolds number of ...
Myszko, M
core  

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Medium-range Forecast Uncertainty for a Rainstorm Associated with Northeast Cold Vortex

应用气象学报
The case study examines the double-rainband torrential rainstorm that occurred in Northeast China on 27 June 2022, focusing on its formation mechanisms and forecasting errors.
Tan Zhenghua, Lin Jian, Yan Qi, Fu Jiaolan, Lu Zhongyan, Yang Ruiwen, Lu Jinglong, Gong Yu   +7 more
doaj   +1 more source

The South American Low-Level Jet Experiment

Bulletin of the American Meteorological Society, 2006
Abstract Moisture is transported in South America westward from the tropical Atlantic Ocean to the Amazon basin, and then southward toward the extratropics. A regional intensification of this circulation to the east of the Andes Mountains is called the South American low-level jet (SALLJ), with the strongest winds found over eastern Bolivia.
C. Vera, J. Baez, M. Douglas, C. B. Emmanuel, J. Marengo, J. Meitin, M. Nicolini, J. Nogues-Paegle, J. Paegle, O. Penalba, P. Salio, C. Saulo, M. A. Silva Dias, P. Silva Dias, E. Zipser   +14 more
openaire   +2 more sources

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

Advanced 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, Lienhard Wegewitz, René Gustus, Henning Wiche, Wolfgang Maus‐Friedrichs   +4 more
wiley   +1 more source