| 下击暴流空间相关性风场模拟 |
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| 引用本文： | 张文福,谢丹 刘迎春,计静,.下击暴流空间相关性风场模拟[J].振动与冲击,2013,32(10):12-16. |
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| 作者姓名： | 张文福 谢丹 刘迎春 计静 |
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| 作者单位： | 1. 东北石油大学 土木建筑工程学院，大庆 163318； 2. 黑龙江省防灾减灾及防护工程重点实验室，大庆 163318 |
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| 摘 要： | 考虑时间衰减性研究了下击暴流平均风速与空间观测点位置的关系，并给出了空间中四个点的平均风速随时间的分布情况。在确定性-随机性混合模型的基础上，利用Wood竖向风剖面模型和Holmes水平径向风剖面模型模拟出空间七点处的平均风速，并采用AR模型生成具有时间相关性和空间相关性的脉动风速，从而获得下击暴流空间相关性风场。通过脉动风相关函数及功率谱的对比表明，本文方法具有较高的精度。
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| 关 键 词： | 下击暴流 风场模拟 空间相关 AR模型 |
| 收稿时间： | 2012-4-11 |
| 修稿时间： | 2012-6-15 |
Simulation of downburst wind field with spatial correlation |
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| ZHANG Wen-fu,XIE Dan,LIU Ying-chun,JI Jing.Simulation of downburst wind field with spatial correlation[J].Journal of Vibration and Shock,2013,32(10):12-16. |
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| Authors: | ZHANG Wen-fu XIE Dan LIU Ying-chun JI Jing |
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| Affiliation: | 1. College of Civil and Architecture Engineering, Northeast Petroleum University School, Daqing, 163318, China2. Heilongjiang Key Laboratory of Disaster Prevention, Mitigation and Protection Engineering, Daqing 163318, China |
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| Abstract: | Considering the time decay, the relationship between downburst average wind speed and space observation point location is studied, and average wind speed distribution of 4 spatial points is given. Based on Deterministic–Stochastic Hybrid model, average wind speed samples of 7 spatial points are simulated by Wood vertical wind profile model and Holmes horizontal radial wind profile model, and fluctuating wind speed samples with time correlation and spatial correlation are obtained by AR model, then downburst wind field with spatial correlation is obtained. Numerical results of the comparisons of correlation function and PSD indicate that the proposed method is of highly precision. |
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| Keywords: | downburstwind field simulationspatial correlationAR model |
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