Numerical and Physical Simulation of a Thunderstorm Downburst
Numerical and Physical Simulation of a Thunderstorm Downburst
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DOI：
10.3850/978-981-07-8012-8_p3
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发表时间：
2013
影响因子：
4.8
通讯作者：
M. Jesson;M. Haines;N. Singh;M. Sterling;I. Taylor
中科院分区：
文献类型：
--
作者：
M. Jesson;M. Haines;N. Singh;M. Sterling;I. Taylor
本文介绍了英国斯特拉斯克莱德大学 (UoS) 和伯明翰大学 (UoB) 联合项目开展的工作，旨在物理和数值模拟雷暴下击暴流。 UoB 下击暴流模拟器使用直径为 1m 的冲击射流，配有计算机控制的风扇和襟翼，以物理方式模拟下击暴流，收集的数据用于校准和验证 UoS 开发的数值模型。这些模型处于开发的早期阶段，使用新颖的入口条件来模拟流入，从而允许更准确和可变的流入。小波分析用于比较全尺寸和物理模拟数据，相关分析（相图）用于识别物理模拟流场内的结构。初步结果显示物理模拟与全尺寸现场数据以及两组模拟之间具有良好的匹配性。
This paper describes work undertaken as a joint project between the University of Strathclyde (UoS) and the University of Birmingham (UoB) in the UK, aimed at simulating thunderstorm downbursts both physically and numerically. The UoB downburst simulator uses a 1m diameter, impinging jet with computercontrolled fans and flaps to physically simulate a downburst, with the data gathered used for calibration and validation of the numerical models developed at the UoS. These models, which are in an early stage of development, use novel inlet conditions to simulate the inflow, allowing more accurate and variable inflows. Wavelet analysis is used to compare the full-scale and physical simulation data, with correlation analyses (phaseplots) used to identify structures within the physical simulation flow field. Initial results show a good match between the physical simulations and full-scale, field data, and between the two sets of simulations.