Results 21 to 30 of about 231,729 (265)

A six-beam method to measure turbulence statistics using ground-based wind lidars [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
A so-called six-beam method is proposed to measure atmospheric turbulence using a ground-based wind lidar. This method requires measurement of the radial velocity variances at five equally spaced azimuth angles on the base of a scanning cone and one ...
A. Sathe, J. Mann, N. Vasiljevic, G. Lea
doaj   +1 more source

Local fractions – a method for the calculation of local source contributions to air pollution, illustrated by examples using the EMEP MSC-W model (rv4_33) [PDF]

open access: yesGeoscientific Model Development, 2020
We present a computationally inexpensive method for individually quantifying the contributions from different sources to local air pollution. It can explicitly distinguish between regional–background and local–urban air pollution, allowing for fully ...
P. Wind   +3 more
doaj   +1 more source

Wissensbearbeitung im Produktionsprozess des zeitgenössischen Dokumentartheaters

open access: yesStudia theodisca, 2016
Documentary theatre aims to portray truth or authenticity. It tries to produce knowledge, though it is rather difficult to assert the authenticity of this knowledge because the sources imply a great deal of subjectivity.
Priscilla Wind
doaj   +1 more source

An intercomparison of mesoscale models at simple sites for wind energy applications [PDF]

open access: yesWind Energy Science, 2017
Understanding uncertainties in wind resource assessment associated with the use of the output from numerical weather prediction (NWP) models is important for wind energy applications.
B. T. Olsen   +4 more
doaj   +1 more source

Effects of Wind Barriers on Wind Fields and Vehicle Stability on Bridges

open access: yesAtmosphere, 2022
To explore the influence of bridge wind barriers, with their specific opening shapes and arrangements, on bridge deck wind fields and vehicle driving stability under different crosswinds, five bridge wind barrier schemes were designed.
Xiaobo Lin   +4 more
doaj   +1 more source

Stochastic Modeling of Lift and Drag Dynamics to Obtain Aerodynamic Forces with Local Dynamics on Rotor Blade under Unsteady Wind Inflow [PDF]

open access: yesMehran University Research Journal of Engineering and Technology, 2014
This contribution provides the development of a stochastic lift and drag model for an airfoil FX 79-W-151A under unsteady wind inflow based on wind tunnel measurements.
Muhammad Ramzan Luhur   +2 more
doaj  

Wind Farm Wakes from SAR and Doppler Radar

open access: yesRemote Sensing, 2020
We retrieve atmospheric wake characteristics at the wind farm Westermost Rough from Sentinel-1 Synthetic Aperture Radar (SAR) images. For the first time, co-located reference measurements of the full flow field around the wind farm are available from ...
Tobias Ahsbahs   +3 more
doaj   +1 more source

Wind power variation by wind veer characteristics with two wind farms

open access: yesScientific Reports, 2023
AbstractTo clarify the wind veer characteristics with height and their effect on the wind turbine power outputs, an investigation was carried out at the wind farms with complex and simple terrains. A 2 MW and a 1.5 MW wind turbine were tested, each having an 80 m tall met mast and a ground lidar to capture wind veering.
Undarmaa Tumenbayar, Kyungnam Ko
openaire   +3 more sources

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