Numerical Simulation of Natural Wind Field

被引：1

作者：

李明水 ^{[1
]}

贺德馨 ^{[1
]}

机构：

[1] 中国空气动力研究与发展中心

来源：

空气动力学学报 | 1999年 / 01期

关键词：

FFT; 波迭加法; 风场; 数值模拟;

D O I：

暂无

中图分类号：

V211.1 [理论空气动力学];

学科分类号：

摘要：

为在时域进行大型结构的气动弹性动力响应分析，必须首先模拟该结构所受到的气动荷载或所处自然风场的时间历程。本文通过在常规的波迭加方法中引入二维和三维空间谱，结合快速Ｆｏｕｒｉｅｒ变换（ＦＦＴ），规范了该方法在风工程中的应用，讨论了各向同性均匀风场等空间步长以及非均匀风场不等空间步长数值模拟的理论和方法。算例表明即使需要模拟非常长的风速脉动时间历程，方法仍具有非常高的精度和效率。

引用

页码：45 / 52

页数：8

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