Results 151 to 160 of about 948 (180)

Physical and numerical modelling of thunderstorm downbursts

Journal of Wind Engineering and Industrial Aerodynamics, 2001
Abstract In this study, a static continuous impinging jet has been used to simulate a thunderstorm downburst. Velocity characteristics have been investigated at various positions in the flow over flat terrain, and over simple topographic features, thereby yielding topographical speed-up factors. A generic empirical equation describing the development
Wood, Graeme S., Kwok, Kenny C. S., Motteram, Nicholas A., Fletcher, David   +3 more
openaire   +2 more sources

Experimental Simulation Of Downburst Lines: A Particle Image Velocimetry Study Of Downburst Collisions

Progress in Canadian Mechanical Engineering. Volume 4, 2021
Kyle Graat, Shivani Jariwala, Eric Savory   +2 more
openaire   +1 more source

Leonardo da Vinci and the Downburst

Bulletin of the American Meteorological Society, 1990
Abstract Evidence from the drawings, experiments, and writings of Leonardo da Vinci are presented to demonstrate that da Vinci recognized and, possibly, discovered the downburst and understood its associated airflow. Other early references to vortex flows resembling downbursts are mentioned.
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A proposed model of the pressure field in a downburst

Wind and Structures, 2013
Pressure field and velocity profiles in a thunderstorm downburst are significantly different from that of an atmospheric boundary layer wind. A model of the pressure field in a downburst is presented in accordance with the experimental and numerical results. Large eddy simulation method is employed to investigate transient pressure field on impingement
Z. Tang, L.Y. Lu
openaire   +1 more source

Feedback control for penetrating a downburst

Guidance, Navigation and Control Conference, 1987
Feedback logic is given that produces satisfactory penetration of an aircraft through a severe downburst. The logic has two parts: (1) A switch that calls for full throttle and tight climb-rate-hold feedback logic when the magnitude of headwind-rate exceeds a threshold level; this switch stays on until re-set by the pilot after penetration of the ...
openaire   +1 more source

Experimental Investigation of Downbursts in a Crossflow

AIAA Scitech 2021 Forum, 2021
Skyler Jacob, Garrett Clay, Jandreau Jackson, Jamey D. Jacob   +3 more
openaire   +1 more source

Analysis of a thunderstorm downburst

1983
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology and Physical Oceanography, 1983. ; Microfiche copy available in Archives and Science. ; Bibliography: leaf 120. ; by John Thomas DiStefano. ; M.S.
openaire   +1 more source

DOWNBURSTS: Meteorological features and wind field characteristics

Journal of Wind Engineering and Industrial Aerodynamics, 1990
Abstract Since the term “downburst” was coined by the author back in 1976, it has been subclassified into “microburst” and “macroburst” according to the horizontal dimension of the wind system. Introduced in this paper is the basic observational evidence of the microburst investigated by three fact-finding projects in 1978, 1982, and 1986, at three ...
openaire   +1 more source

downburst, n.

2023
openaire   +1 more source

Extensible Catenary Approach in Analyzing Transmission Line’s Conductors Under Downbursts

Engineering Structures, 2021
Ahmed Shehata, Ashraf El Damatty
exaly