Results 101 to 110 of about 395,331 (337)

Global Intermittency and Collapsing Turbulence in the Stratified Planetary Boundary Layer

Boundary-layer Meteorology, 2014
Direct numerical simulation of the turbulent Ekman layer over a smooth wall is used to investigate bulk properties of a planetary boundary layer under stable stratification.
C. Ansorge, J. Mellado
semanticscholar   +1 more source

The Case of a 19‐Year‐Old Woman Presenting With Headache and Transient Loss of Consciousness

Annals of Clinical and Translational Neurology, EarlyView.
Yan Lin, Xiaoyu Zhou, Lin Shen, Kunqian Ji, Yuying Zhao, Chuanzhu Yan, Yiming Liu, Wei Li   +7 more
wiley   +1 more source

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Mitigating Uncertainty Problems of Renewable Energy Resources Through Efficient Integration of Hybrid Solar PV/Wind Systems Into Power Networks

IEEE Access
In recent years, there has been a proliferation of studies focusing on sustainable energy sources aimed at delivering reliable power with reduced greenhouse gas emissions.
M. M. R. Ahmed, Sohrab Mirsaeidi, Mohsin Ali Koondhar, Nabil Karami, Elsayed Mohamed Tag-Eldin, Nivin A. Ghamry, Ragab A. El-Sehiemy, Zuhair Muhammed Alaas, Ibrahim Mahariq, A. M. Sharaf   +9 more
doaj   +1 more source

Global Assessment of High-Altitude Wind Power

Energies, 2009
The available wind power resource worldwide at altitudes between 500 and 12,000 m above ground is assessed for the first time. Twenty-eight years of wind data from the reanalyses by the National Centers for Environmental Prediction and the Department of ...
Cristina L. Archer, Ken Caldeira
doaj   +1 more source

Intermittency layers associated to turbulent interfaces [PDF]

, 2012
In this study we focus on the transport across an interface which separates two regions with homogeneous and isotropic turbulence in absence of a mean shear. The turbulent transport resulting presents an internal structure.
De Santi, Francesca, Di Savino, Silvio, Iovieno, Michele, Tordella, Daniela   +3 more
core  

On the Rapid Increase of Intermittency in the Near-Dissipation Range of Fully Developed Turbulence

, 2005
Intermittency, measured as log(F(r)/3), where F(r) is the flatness of velocity increments at scale r, is found to rapidly increase as viscous effects intensify, and eventually saturate at very small scales.
Castaing, Bernard, Chevillard, Laurent, Leveque, Emmanuel   +2 more
core   +3 more sources

Domain Wall Rebounds Driven by Competing Entropic and Spin‐Transfer Torques in Cylindrical Nanowires

Advanced Functional Materials, EarlyView.
Domain‐wall motion in cylindrical magnetic nanowires driven by nanosecond current pulses. Low current densities efficiently displace domain walls, whereas higher currents cause rebound at the wire ends. The effect results from the interplay between spin‐transfer torque and thermally induced processes, highlighting the role of thermal gradients in ...
Elias Saugar, Jorge Marqués‐Marchán, Sara Catalano, Agustina Asenjo, Michael Foerster, Miguel Angel Niño, Manuel Vazquez, Fèlix Casanova, Arantxa Fraile Rodríguez, Rafael P. Del Real, Oksana Chubykalo‐Fesenko, Cristina Bran   +11 more
wiley   +1 more source

Revisiting turbulence small-scale behavior using velocity gradient triple decomposition

New Journal of Physics, 2020
Turbulence small-scale behavior has been commonly investigated in literature by decomposing the velocity-gradient tensor ( A _ij ) into the symmetric strain-rate ( S _ij ) and anti-symmetric rotation-rate ( W _ij ) tensors. To develop further insight, we
Rishita Das, Sharath S Girimaji
doaj   +1 more source

Intermittency on catalysts

, 2007
The present paper provides an overview of results obtained in four recent papers by the authors. These papers address the problem of intermittency for the Parabolic Anderson Model in a \emph{time-dependent random medium}, describing the evolution of a ...
Gaertner, J., Hollander, F. den, Maillard, G.   +2 more
core   +2 more sources