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A wavelet method for the simulation of a stochastic wind field
Author(s): 
Pages: 52-56
Year: Issue:  1
Journal: JOURNAL OF VIBRATION ENGINEERING

Keyword:  风场随机过程Meyer小波基小波逆变换;
Abstract: 首先对洞庭湖大桥处的自然脉动风进行了小波分析,从分析结果可以看出,自然脉动风具有一定的间歇性和局部相似性.传统的谐波合成法(WAWS)和线性滤波器方法(ARMA)虽然可以模拟随机风场的脉动风,但是它们无法模拟脉动风的局部相似性和间歇性.针对这一点,采用Meyer小波基,利用小波逆变换,模拟随机风场的脉动风.最后,根据目标谱,模拟了随机风场的脉动风,模拟的脉动风具有和自然脉动风类似的间歇性和局部相似性,同时模拟脉动风的风谱与目标风谱基本吻合,说明了论文方法的有效性.
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