Wind pressure on a solar updraft tower in a simulated stationary thunderstorm downburst
Wind pressure on a solar updraft tower in a simulated stationary thunderstorm downburst
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模拟静止雷暴下击暴流中太阳能上升气流塔上的风压
DOI：
10.12989/was.2012.15.4.331
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发表时间：
2012-07
影响因子：
1.6
通讯作者：
Liu Chi
中科院分区：
文献类型：
--
作者：
Zhou Xinping;Wang Fang;Liu Chi
Thunderstorm downbursts are responsible for numerous structural failures around the world. The wind characteristics in thunderstorm downbursts containing vortex rings differ with those in 'traditional' boundary layer winds (BLW). This paper initially performs an unsteady-state simulation of the flow structure in a downburst (modelled as a impinging jet with its diameter being Djet) using a computational fluid dynamics (CFD) method, and then analyses the pressure distribution on a solar updraft tower (SUT) in the downburst. The pressure field shows agreement with other previous studies. An additional pair of low-pressure region and high-pressure region is observed due to a second vortex ring, besides a foregoing pair caused by a primary vortex ring. The evolutions of pressure coefficients at five orientations of two representative heights of the SUT in the downburst with time are investigated. Results show that pressure distribution changes over a wide range when the vortices are close to the SUT. Furthermore, the fluctuations of external static pressure distribution for the SUT case 1 (i.e., radial distance from a location to jet center x=Djet) with height are more intense due to the down striking of the vortex flow compared to those for the SUT case 2 (x=2Djet). The static wind loads at heights z/H higher than 0.3 will be negligible when the vortex ring is far away from the SUT. The inverted wind load cases will occur when vortex is passing through the SUT except on the side faces. This can induce complex dynamic response of the SUT.
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DOI：
10.1175/1520-0450(1988)027
发表时间：
1988-03
期刊：
Journal of Applied Meteorology
影响因子：
--
作者：
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通讯作者：
R. K. Wong;Norman Chidambaram;Lawrence Cheng;M. English
影响因子：
1.6
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影响因子：
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通讯作者：
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DOI：
10.1061/(asce)0733-9402(2008)134:1(6
发表时间：
2008-03
期刊：
Journal of Energy Engineering-asce
影响因子：
--
作者：
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通讯作者：
Xinping Zhou;Jiakuan Yang;B. Xiao;Xiaoyan Shi
影响因子：
5.5
作者：
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通讯作者：
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