圆柱绕流研究进展及展望

Research progress and prospects on flow across cylinder

圆柱绕流问题广泛存在于水利工程、建筑工程和环境工程之中。通过对前人圆柱绕流研究的成果整理和分析,将其分为解析研究、物理模型研究和数值模拟研究3个阶段,总结了单圆柱、双圆柱以及圆柱群绕流在流动形态和圆柱受力特性方面的研究进展。分析发现,现有研究主要集中于简单条件下单柱和双柱的受力特性和尾流流场结构,今后需进一步开展柱群在海洋立管、高桩码头和环境工程等复杂条件下的研究,开发尾流形态的主动控制技术。

Flow around cylinder has widely existed in hydraulic engineering, construction engineering, and environmental engineering.Based on the previous researches, this paper summarizes the flow patterns and the force characteristics of single cylinder, two cylinders, and cylinder group by the stages of analytical research, physical model and numerical simulation. It can be found that most researches focused on the flow patterns and the force characteristics of single cylinder or two cylinders. The further research of cylinder group under more complex situations should be carried out on marine risers, high-piled wharf and environmental engineering, and develops the active control technology to control wake characteristics effectively.