Results 41 to 50 of about 10,050 (162)
Wind shear estimation model using load measurement of wind turbine tower and surrogate model
Wind Energy, 2020 A wind shear estimation method based on fore‐aft moment is proposed to estimate wind shear strength without a Doppler lidar. We construct wind shear estimation models (WSEMs) using surrogate models whose input is the time‐averaged fore‐aft moment and ...
Nobuo Namura
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Atmosphere, 2023 Machine learning algorithms are applied to predict intense wind shear from the Doppler LiDAR data located at the Hong Kong International Airport. Forecasting intense wind shear in the vicinity of airport runways is vital in order to make intelligent ...
Afaq Khattak +3 more
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An expert system for wind shear avoidance [PDF]
Engineering Applications of Artificial Intelligence, 1989 Abstract A study of intelligent guidance and control concepts for protecting against the adverse effects of wind shear during aircraft takeoffs and landings is being conducted, with current emphasis on developing an expert system for wind shear avoidance. Principal objectives are to develop methods for assessing the likelihood of wind shear encounter
Robert F. Stengel, D. Alexander Stratton
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Analysis of the influence of the wind speed profile on wind power production
Energy Reports, 2022 The characterization of wind speed and its variability at a site is important for wind resource assessment. The most readily available wind measurements are at 10 m above ground level.
C.A. Lopez-Villalobos +3 more
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Atmosphere, 2020 Low-level wind shear is usually to be a rapidly changing meteorological phenomenon that cannot be ignored in aviation security service by affecting the air speed of landing and take-off aircrafts. The lidar team in Ocean University of China (OUC) carried
Hongwei Zhang +9 more
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Logarithmic Wind Profile: A Stability Wind Shear Term
, 2014 A stability wind shear term of logarithmic wind profile based on the terms of turbulent kinetic energy equation is proposed. The fraction influenced by thermal stratification is considered in the shear production term. This thermally affected shear is compared with buoyant term resulting in a stability wind shear term.
Sakagami, Yoshiaki +4 more
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Propagation Mechanism Analysis of Wind Turbine Ripples Caused by Wind Shear
Kongzhi Yu Xinxi Jishu, 2019 Wind shear will change the state of wind turbine, and influence the quality of the power feeding back to the network. In this paper, a permanent-magnet direct-drive synchronous cylindrical wind turbine was used as an example in order to study the ...
LI Zhiyong +3 more
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Competing Effects of Droplet Sedimentation and Wind Shear on Entrainment in Stratocumulus
Journal of Advances in Modeling Earth Systems, 2019 The joint effect of droplet sedimentation and wind shear on cloud top entrainment in stratocumulus is investigated with direct numerical simulations. Although it is well understood that droplet sedimentation weakens entrainment while wind shear enhances ...
Bernhard Schulz, Juan Pedro Mellado
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Determining Wind Shear Threshold by Using Historical Sounding Data in Experimental Area
AtmosphereThis paper conducts a technical study on a method for determining the occurrence threshold of wind shear based on historical sounding data. After analyzing the impact of low-altitude wind shear on aircraft flight safety, a method for determining the ...
Tingting Shu +5 more
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The Influence of Tilt Angle on the Aerodynamic Performance of a Wind Turbine
Applied Sciences, 2020 Aerodynamic performance of a wind turbine at different tilt angles was studied based on the commercial CFD software STAR-CCM+. Tilt angles of 0, 4, 8 and 12° were investigated based on uniform wind speed and wind shear.
Qiang Wang, Kangping Liao, Qingwei Ma
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