随机Fourier谱风场仿真算法的验证  

Validation of Randomness of Wind Field Simulation Algorithm Based on Random Fourier Spectrum

作　　者：张琳琳[1] 李杰[1] 

机构地区：[1]同济大学建筑工程系

出　　处：《同济大学学报（自然科学版）》2008年第1期1-5,共5页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金委优秀创新研究群体科学基金资助项目(50321803)

摘　　要：在随机Fourier谱风场仿真算法的基础上,进一步考察随机仿真风速场能否体现给定风环境的随机特性.这一考察建立在仿真风场与目标风场之间的随机Fourier谱和随机相干函数的均值谱、标准差谱的对比之上.实例分析表明,随机风场数值仿真算法可以准确地反映风场的随机性.It is investigated whether random simulated wind field can reflect the random characteristics of the given wind environment on the basis of wind field simulation algorithm of random Fourier spectrum. This investigation is based on a comparative study of the mean spectrum and the standard spectrum of the random Fourier amplitude spectrum and the random coherence function between the simulated wind field and the objective wind field. A case study shows that the proposed random wind field simulation algorithm can reflect accurately the random characteristics of the given wind field.

关 键 词：风场仿真 随机FOURIER谱 随机相干函数 脉动风速 随机性 

分 类 号：TU973.32[建筑科学—结构工程]