得到如下结论：高层建筑横截面为方形时，其横风向风荷载主要由规则性旋涡脱落导致的尾流激励构成，为窄带随机激励；
The calculated results indicate that the across-wind loads of high-rise buildings with square sections are induced mainly by vortex shedding and are narrow-band random processes.
本文还分析了前缘分离涡破裂前后的流动现象和旋涡横截面流线图谱的变化规律。
This paper also presents analysis of the flow features ahead and behind of the leading edge vortex breakdown and the topological features of section streamlines.
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