A simple vortex model of a thunderstorm downburst – a parametric evaluation
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A simple vortex model of a thunderstorm downburst – a parametric evaluation. / Jesson, Michael; Sterling, Mark.
In: Journal of Wind Engineering and Industrial Aerodynamics, Vol. 174, 03.2018, p. 1-9.Research output: Contribution to journal › Article › peer-review
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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 -