并列双柱圆柱体在均匀流场中的涡激振动

讨论了并列双柱圆柱体在均匀流场中的涡激振动。依据已发表的有关该课题的实验与理论资料,提出了一种关于并列双柱圆柱体在均匀流场中涡激振动的理论预报模型。将理论计算值与资料所提供的实验值进行比较后,发现理论值与实验值尚能吻合。为了验证理论预报模型的正确性,作了实验观察,发现理论预报的涡激振动现象与实验中所出现的吻合良好。为了更好地掌握双柱涡激振动的机理,进行了结果分析和讨论。

The Vortex-Excited Vibration of Two Circular Cylinders in Side by Side Arrangement in Uniform Cross Flow

The paper presents the problem of Vortex-excited vibration of two circular cylinders side by side in uniform cross flow. In accordance with experimental and theoretical materials provided previously on this problem, the paper discusses various factors influencing the behaviour of two cylinders in side by side arrangement in uniform cross flow, and then gives a theoretical method for predicting the natural phenomenon. Having compared the results of theoretical calculation with those pravided by experimental materials, the authors find that the theoretical results are in agreemment with experimental results. For fully testing the exactness of the theoretical method, an experimental investigation has been made on a pair of circular cylinders subjected to uniform cross flow. The results of the experiment show that the experimental phenomenon is identical with that presented by the theoretical calculation. Further research necessities are discussed.