A simple vortex model of a thunderstorm downburst – a parametric evaluation

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@article{91230dcc66834905ab5db1ec8a5423ac,
title = "A simple vortex model of a thunderstorm downburst – a parametric evaluation",
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. However, it is well-known that there is a large, random variation in full-scale downbursts and so a quick, easily varied model would be of benefit to engineers calculating dynamic loading on structures. This paper introduces a simple and computationally inexpensive vortex model of a downburst, which is shown to model the main features of the flow field in a physically simulated thunderstorm downburst to an appropriate degree of accuracy. ",
keywords = "Transient winds, Numerical model, Vortex, Thunderstorm, Downburst",
author = "Michael Jesson and Mark Sterling",
year = "2018",
month = mar,
doi = "10.1016/j.jweia.2017.12.001",
language = "English",
volume = "174",
pages = "1--9",
journal = "Journal of Wind Engineering and Industrial Aerodynamics",
issn = "0167-6105",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - A simple vortex model of a thunderstorm downburst – a parametric evaluation

AU - Jesson, Michael

AU - Sterling, Mark

PY - 2018/3

Y1 - 2018/3

N2 - 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. However, it is well-known that there is a large, random variation in full-scale downbursts and so a quick, easily varied model would be of benefit to engineers calculating dynamic loading on structures. This paper introduces a simple and computationally inexpensive vortex model of a downburst, which is shown to model the main features of the flow field in a physically simulated thunderstorm downburst to an appropriate degree of accuracy.

AB - 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. However, it is well-known that there is a large, random variation in full-scale downbursts and so a quick, easily varied model would be of benefit to engineers calculating dynamic loading on structures. This paper introduces a simple and computationally inexpensive vortex model of a downburst, which is shown to model the main features of the flow field in a physically simulated thunderstorm downburst to an appropriate degree of accuracy.

KW - Transient winds

KW - Numerical model

KW - Vortex

KW - Thunderstorm

KW - Downburst

U2 - 10.1016/j.jweia.2017.12.001

DO - 10.1016/j.jweia.2017.12.001

M3 - Article

VL - 174

SP - 1

EP - 9

JO - Journal of Wind Engineering and Industrial Aerodynamics

JF - Journal of Wind Engineering and Industrial Aerodynamics

SN - 0167-6105

ER -