| 两类建筑结构脉动风场的数值模拟 |
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| 引用本文： | 徐旭,屈应辉,刘玉. 两类建筑结构脉动风场的数值模拟[J]. 上海大学学报(自然科学版), 2009, 15(2): 191-198 |
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| 作者姓名： | 徐旭 屈应辉 刘玉 |
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| 作者单位： | （上海大学 土木工程系，上海 200072） |
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| 基金项目： | 上海市教育委员会资助项目 |
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| 摘 要： | 基于随机模拟理论的谱解法以及快速傅里叶变换（FFT）技术，运用MATLAB语言编程模拟两类典型结构物周围的脉动风场，并给出部分节点的脉动风速时程曲线.模拟的过程中考虑结构不同点的空间相关性，并采用多种方法验证本程序和数值模拟结果的正确性.FFT技术能大大提高程序运算速度，而传统的谱解法又能保证模拟的精度，使得脉动风速的数值模拟结果能满足工程分析的需要.
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| 关 键 词： | 随机过程；数值模拟；脉动风场；谱解法 |
| 收稿时间： | 2007-11-22 |
Simulation of Fluctuating Wind Fields around Two Kinds of Civil-Engineering Structures |
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| XU Xu,QU Ying-hui,LIU Yu. Simulation of Fluctuating Wind Fields around Two Kinds of Civil-Engineering Structures[J]. Journal of Shanghai University(Natural Science), 2009, 15(2): 191-198 |
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| Authors: | XU Xu QU Ying-hui LIU Yu |
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| Affiliation: | (Department of Civil Engineering, Shanghai University, Shanghai 200072, China) |
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| Abstract: | Using a spectral representation method in the theory of stochastic simulation, and the fast Fourier transform (FFT) technology, fluctuating wind fields around two typical structures are simulated with MATLAB. Time-history curves of fluctuating wind at some nodes are presented. Correlation of different points on the structure is considered. Various methods have been used to verify correctness of the numerical results. The program is showed to be very efficient with the FFT. Meanwhile, precision of the traditional spectral representation is preserved. It is found that the simulation results of fluctuating wind well meet the requirement of engineering analysis. |
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| Keywords: | stochastic process numerical simulation fluctuating wind field spectral representation, |
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