Results 51 to 60 of about 112,789 (301)

Meteorological tower wind shear characteristics, vertical wind speed profile, and surface roughness analysis near the coastline of Chennai [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2019
Extrapolation of wind data is required to estimate wind speeds at high altitudes. Doing so requires an essential understanding of wind shear characteristics related to the location or region.
Poongavanam Sardar Maran
doaj   +1 more source

Sensitivity of the surface orographic gravity wave drag to vertical wind shear over Antarctica [PDF]

, 2019
The effects of vertical wind shear on orographic gravity wave drag derived previously from inviscid linear theory are evaluated using reanalysis data. Emphasis is placed on the relative importance of uniform and directional shear (associated with first ...
Bender C.M., Gregory D., Holly V. Turner, John Methven, Kim Y.J., Lott F., McFarlane N.A., Miguel A. C. Teixeira, Miranda P.M.A., Miranda P.M.A., Palmer T.N., Phillips D.S., Simon B. Vosper, Sodemann H., Teixeira M.A.C., Teixeira M.A.C., Teixeira M.A.C., Wallace J.M., Watanabe S., Zadra A.   +19 more
core   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source

Vertical shears of horizontal winds in the lower thermosphere observed by ICON

Geophysical Research Letters, 2022
AbstractVertical shears of horizontal winds play an important role in the dynamics of the upper atmosphere. Prior observations have indicated that these shears predominantly occur in the lower thermosphere. MIGHTI observations from the Ionospheric Connection Explorer indicate that strong wind shears are a common feature of the lower thermosphere ...
Scott L. England, Christoph R. Englert, Brian J. Harding, Colin C. Triplett, Kenneth Marr, John M. Harlander, Gary R. Swenson, Astrid Maute, Thomas J. Immel   +8 more
openaire   +2 more sources

Effect of Laser Deoxidation on Adhesive‐Bonded Aluminum in an Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
This study investigates laser ablation of aluminum under oxygen‐free conditions. The goal is to produce oxide‐free substrates that enable improved adhesive bonding with epoxy. Optimized laser parameters (90% overlap, 300 µJ) combined with oxide‐free substrates result in the highest tensile strength of the adhesive bond.
Sandra Gerland, Finn‐Lennard Janthur, Sarah Seffer, Jörg Hermsdorf, Ludger Overmeyer, Annika Raatz   +5 more
wiley   +1 more source

Analysis of Vertical Wind Shear Effects on Offshore Wind Energy Prediction Accuracy Applying Rotor Equivalent Wind Speed and the Relationship with Atmospheric Stability

Applied Sciences, 2022
If the wind speed that passed through a wind turbine rotor disk area is constant, the hub height wind speed (HHWS) could be representative of the wind speed over the rotor disk area.
Geon Hwa Ryu, Dongjin Kim, Dae-Young Kim, Young-Gon Kim, Sung Jo Kwak, Man Soo Choi, Wonbae Jeon, Bum-Suk Kim, Chae-Joo Moon   +8 more
doaj   +1 more source

Circulation and Dissipation on Hot Jupiters

, 2010
Many global circulation models predict supersonic zonal winds and large vertical shears in the atmospheres of short-period jovian exoplanets. Using linear analysis and nonlinear local simulations, we investigate hydrodynamic dissipation mechanisms to ...
Arras, Batygin, Burkert, Chandrasekhar, Cooper, Dobbs-Dixon, Dobbs-Dixon, Drazin, Fricke, Goodman, J. Goodman, J. Li, Perna, Rauscher, Showman, Spiegel   +15 more
core   +1 more source

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source

The Predictability of Idealized Tropical Cyclones in Environments With Time‐Varying Vertical Wind Shear

Journal of Advances in Modeling Earth Systems, 2017
This study describes ensembles of idealized tropical cyclone (TC) simulations conducted within a new modeling framework that allows for time‐varying environments.
Peter M. Finocchio, Sharanya J. Majumdar
doaj   +1 more source

Increased Turbulence in the Eurasian Upper‐Level Jet Stream in Winter: Past and Future

Earth and Space Science, 2021
Anthropogenic activities have been increasingly strengthening the meridional temperature gradient in the upper atmosphere, which has a profound impact on the wind shear and turbulence in mid‐latitudes.
Yanmin Lv, Jianping Guo, Jian Li, Yi Han, Hui Xu, Xiaoran Guo, Lijuan Cao, Wenhua Gao   +7 more
doaj   +1 more source