Results 71 to 80 of about 2,216,341 (286)

STRONG WIND AND VERTICAL WIND SHEAR ABOVE 30 km

, 1969
Abstract : Strong wind and vertical wind shear must be considered for design and operation of vehicles that will either operate in or penetrate the upper stratosphere and mesosphere. Global extremes of these atmosphere parameters are estimated in this report for altitudes above 30 km. For the Northern Hemisphere estimated 90, 95, and 99% winds, related
openaire   +2 more sources

Development and evaluation of an aerodynamic model for a novel vertical axis wind turbine concept [PDF]

, 2013
There has been a resurgence of interest in the development of vertical axis wind turbines which have several inherent attributes that offer some advantages for offshore operations, particularly their scalability and low over-turning moments with better ...
Shires, A, Andrew Shires, Shires, Andrew
core   +1 more source

Advancing SafeWax, A Bio‐Inspired Superhydrophobic Coating, Toward Sustainable and Climate‐Resilient Crop Protection

Advanced Functional Materials, EarlyView.
This study advances SafeWax, a bio‐inspired, fatty‐acids‐based superhydrophobic coating, by identifying an agriculturally compliant solvent and revealing how solvent‐controlled Fatty acid crystallization governs the coating's microscopic structure and performance.
Niv Ben‐Arie, Iryna Polishchuk, Franziska Tauber, Coralie Schneider, Elena Prudnikov, Alessia Calora, Silvia Milita, Simona Fermani, Mireia Alejandra Ibanez Revert, Ilaria Filippetti, Claudio Ratti, Matthias Kellermeier, Markus Rueckel, Boaz Pokroy   +13 more
wiley   +1 more source

Performance evaluation of three cross flow vertical axis wind turbine configurations. [PDF]

, 2009
The performance output of three Vertical Axis Wind Turbine (VAWT) configurations has been evaluated using a two-dimensional Computational Fluid Dynamic (CFD) model. Data has been obtained using a quasi-steady Multi Reference Frame (MRF) approach in which
Rao, H.V., Colley, Gareth, Mishra, Rakesh, Woolhead, R.   +3 more
core   +3 more sources

Non‐Monotonic Convective Response to Vertical Wind Shear: A Closer Look From Cloud Resolving Model Simulations

Journal of Advances in Modeling Earth Systems
Using a three‐dimensional cloud‐resolving model, a systematic exploration is undertaken of the response of a radiative‐convective equilibrium state to imposed vertical wind shear of varying magnitude.
Yang Tian, Rich Neale, Hugh Morrison
doaj   +1 more source

Statistical Characteristics of Low-Level Vertical Directional Shear and Its Potential Implications for Aircraft Landing at Baghdad International Airport

Wind
Understanding wind direction (WD) variability and vertical directional shear is critical for aviation safety, particularly during landing when aircraft are highly sensitive to abrupt wind changes.
Thoalfaqar Al-Rbayee, Monim H. Al-Jiboori, Osama T. Al-Taai   +2 more
doaj   +1 more source

Upper limit for wind shear in stably stratified conditions expressed in terms of a bulk Richardson number

Meteorologische Zeitschrift, 2017
Profile measurements of wind and potential temperature from a land site (obtained by a RASS for several years) and an offshore site (obtained at the meteorological mast on the research platform FINO 1 for one year) are used to analyse the temporal ...
Stefan Emeis
doaj   +1 more source

Seasonality of Vertical Wind Shear in the Northwestern North Atlantic

Wind Energy
ABSTRACT Compared to onshore, offshore wind offers a more consistent resource, potential close proximity to load centers, and greater distance from people's view sheds. Much of our understanding of the wind resources in the western north Atlantic derives from remote sensing and scattered measurements.
Nathaniel S. Pearre, Alexandra Pimentel, Lukas Swan   +2 more
openaire   +1 more source

Programmable Soft Actuator with Multi‐Responsiveness Based on Conductive MOF‐Liquid Crystal Polymer Composite

Advanced Functional Materials, EarlyView.
A sequential dual‐alignment strategy independently programs the orientation of conductive metal‐organic framework (c‐MOF) microrods and liquid crystals within a composite film. This approach creates an asymmetric bilayer structure that enables precise, multi‐responsive actuation.
Taegyun Hong, Geunho Kim, Changjae Lee, Sarang Lee, Jesse G. Park, Dong Ki Yoon   +5 more
wiley   +1 more source

Shear enhanced nutrient supply at the Mesoscale

, 2010
Phytoplankton live almost exclusively in the sunlit waters of the euphotic zone. However, in addition to sunlight, phytoplankton require a regular supply of nutrients to grow.
Forryan, Alexander
core   +1 more source