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THE NEW PARADIGM OF THUNDERSTORM DOWNBURSTS FOR SAFE AND SUSTAINABLE DEVELOPMENT
, 2019 openaire +1 more source
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Journal of Wind Engineering and Industrial Aerodynamics, 2002
Chris W Letchford
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Chris W Letchford
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3D Engineering Model of Downburst Evolution in Thunderstorm
Procedia Engineering, 2011 AbstractDownburst in thunderstorm mainly refers to the outflow on frontier and the strong wind shear caused by the downburst. In this paper, the thunderstorm evolution is divided into three stages as growing, mature and dissipating stages according to its development. Based on meteorological data, trends of relevant parameters are presented.
Chu, Tang, Guanxin, Hong
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Thunderstorm downburst risks to wind farms
Journal of Renewable and Sustainable Energy, 2013As has been noted in recent experiences, thunderstorms can cause damage to turbine units that are part of a wind farm because of the correlated wind inflow fields that these units can be subjected to simultaneously. We extend a model for simulating thunderstorm downburst events and their effects on a single turbine unit to situations where multiple ...
Hieu Huy Nguyen, Lance Manuel
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A simple vortex model of a thunderstorm downburst – A parametric evaluation [PDF]
Journal of Wind Engineering and Industrial Aerodynamics, 2018 Abstract Thunderstorm downbursts are short-lived, transient extreme wind events which can cause wind speeds equivalent to a category EF3 tornado (∼150mph). The complex flow field which they produce has previously been the subject of time-expensive numerical modelling.
Mike Jesson, Mark Sterling
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Physical and numerical modelling of thunderstorm downbursts
Journal of Wind Engineering and Industrial Aerodynamics, 2001Abstract 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. +3 more
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Journal of Wind Engineering and Industrial Aerodynamics, 2002
Abstract Thunderstorms are responsible for a large amount of wind-induced damage around the world. It is known that the wind characteristics in thunderstorms, particularly downbursts, differ significantly from those of synoptic scale boundary layer winds. This paper describes a study aimed at simulating the flow structure in a downburst and obtaining
Chris W Letchford
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Abstract Thunderstorms are responsible for a large amount of wind-induced damage around the world. It is known that the wind characteristics in thunderstorms, particularly downbursts, differ significantly from those of synoptic scale boundary layer winds. This paper describes a study aimed at simulating the flow structure in a downburst and obtaining
Chris W Letchford
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Numerical simulation of extreme winds from thunderstorm downbursts
Journal of Wind Engineering and Industrial Aerodynamics, 2007In (Chen, L., 2005. Vector time-varying autoregressive (TVAR) models and their application to downburst wind speeds. A PhD Dissertation, Texas Tech University, Lubbock, Texas.), a nonparametric deterministic–stochastic hybrid (NDESH) model was proposed for characterizing and simulating nonstationary thunderstorm downburst wind fields, and two sets of ...
L. Chen, C.W. Letchford
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Circumferential analysis of a simulated three-dimensional downburst-producing thunderstorm outflow
Journal of Wind Engineering and Industrial Aerodynamics, 2014Abstract A high-resolution simulation of a downburst-producing thunderstorm has been conducted using a three-dimensional cloud model. The highly asymmetric near-ground outflow within the downburst has been analyzed within an axi-symmetric framework, by undertaking circumferential spatial averaging of the wind speed components, in order to explore ...
Leigh G Orf, Eric Savory
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