Study on the Downburst Field Characteristics under the Influence of Two-Dimensional Continuous Mountains at Different Distance

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Downburst is an outburst strong wind on or near the ground, and its wind field characteristics are significantly different from boundary layer winds. Continuous mountains at different distance are one of the main factors for the influence of downburst wind field characteristic. In this thesis, the changes of the wind field characteristics under the influence of continuous mountains at different distance after the downburst happened are studied by CFD numerical simulation. The impact of downburst is analysed and summarized through the charts.

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3111-3114

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July 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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[1] Fujita T.T. The downburst. Report of Projects NIMROD and JAWS[R]. Chicago: University of Chicago, (1985).

Google Scholar

[2] Proctor Fred H. Numerical Simulations of an Isolated Microburst. Part I: Dynamics and Structure [J]. Journal of the Atmospheric Sciences. 1988, 45(21): 3137-3160.

DOI: 10.1175/1520-0469(1988)045<3137:nsoaim>2.0.co;2

Google Scholar

[3] Holmes J.D. Modeling of extreme thunderstorm winds for wind loading of structures and risk assessment[C]. Proceedings, 10th International Conference on Wind Engineering, Copenhagen, Denmark, 1999: 1409-1415.

Google Scholar

[4] Whittingham H.E. Extreme wind gusts in Australia[R] 1Bulletin No. 46, Bureau of Meteorology, Melbourne, Australia, (1964).

Google Scholar

[5] Melbourne W.H. Modelling of structures to measure wind effects [C]. Proceedings of Meteorology, Melbourne, Australia, (1972).

Google Scholar

[6] Hangan H, RobertsD, Xu Z, et al. Downburst simulations experimental and numerical challenges[C]. Proceedings of the 2004 Structures Congress 2Building on the Past: Securing the Future, 2004: 1657 – 1664.

Google Scholar

[7] Mason M. physical simulation of thunderstorm downbursts [D]. Masters thesis, Lubbock (TX, USA): Texas Tech Unversiity, (2003).

Google Scholar