Results 51 to 60 of about 3,224,693 (191)
The Role of Vertical Wind Shear in Modulating Maximum Supercell Updraft Velocities
Journal of the Atmospheric Sciences, 2019 Observed supercell updrafts consistently produce the fastest mid- to upper-tropospheric vertical velocities among all modes of convection. Two hypotheses for this feature are investigated.
J. Peters, C. Nowotarski, H. Morrison
semanticscholar +1 more source
, 2013 This paper presents an investigation of the effect of steady and transient free-stream wind shear on the wake structure and performance characteristics of a horizontal axis wind turbine rotor.
SEZER UZOL, NİLAY +2 more
core +1 more source
Meteorologische Zeitschrift, 1997 Many meteorological services operate ground-based observing systems for wind shear warning. In this study, wind shear data from a 1 GHz profiler at the airport Zurich was compared with data obtained from the ground-based AMETIS 1 system.
Thomas Griesser +2 more
doaj +1 more source
A Study of Wind Shear Influences on the Aerodynamic Performances of a UAV Airfoil
Applied Sciences, 2023 In order to study the flight strategies of birds in shear wind and realize the long-range flight of an unmanned aerial vehicle (UAV), the aerodynamic performances of a UAV’s airfoil under different shear wind are studied using numerical methods.
Yin Yang, Dawei Liu, Lianshan Lu
doaj +1 more source
Wind shear training applications for 91/135 [PDF]
, 1991 The requirement for wind shear training of all pilots has been demonstrated too often by the accident statistics of past years. Documents were developed to train airline crews on specific aircraft and to teach recognition of the meteorological conditions
Arbon, ED
core
A two-component transport model for solar wind fluctuations: Waves plus quasi-2D turbulence [PDF]
, 2010 We present a model for the transport of solar wind fluctuations, based on the assumption that they can be well-represented using two distinct components: a quasi-2D turbulence piece and a wave-like piece.
Matthaeus, William H. +3 more
core +1 more source
Remote SensingThe principal factor contributing to the restricted accuracy of wind shear detection resides in the rapid oscillations of the wind field and the intricate characteristics of wind shear. The abrupt alterations in wind speed and direction over a short span
Shijun Zhao +3 more
doaj +1 more source
Journal of Fluid Science and Technology, 2007 This paper shows the aerodynamic characteristics at the mid-length of a rotor blade of a 10-m-diameter wind turbine exposed to wind shear. A sonic wind speed meter and six cup-anemometers were installed one diameter upwind of the turbine in order to ...
Takao MAEDA, Hideyuki KAWABUCHI
doaj +1 more source
Structure of wind-shear turbulence [PDF]
, 1988 The statistical characteristics of wind-shear turbulence are modelled. Isotropic turbulence serves as the basis of comparison for the anisotropic turbulence which exists in wind shear.
Laituri, T. R., Trevino, G.
core
Uncertainty in vertical extrapolation of measured wind speed via shear
, 2019 This report provides formulations for estimation of uncertainties involved in vertical extrapolation of winds, as well as the total uncertainty incurred when winds observed at one height are extrapolated to turbine hub height for wind resource assessment.
Hernández Fillols, Francisco +6 more
core +1 more source