【摘要】 处于串列的两根圆柱体,其下游柱的振动响应比起孤立柱来要大得多,这主要是由于两者之间的流体动力存在着区别。在高雷诺数Re下,要想通过实验方式得到下游柱的流体动力系数存在着较大的困难,而在相同雷诺数Re下的孤立柱的流体动力系数却较为丰富。本文通过对已有的孤立柱和下游柱在高雷诺数Re下的流体动力系数的实验值的分析,得到了一种两者之间的联系式,并将下游柱流体动力系数的计算值与实验值进行了比较。本文的工作为预报处于尾流中工作的圆柱体在高雷诺数Re下的流固耦合振动响应提供了依据。更多还原

【Abstract】 The responses of the downstream cylinder in tandem arrangement are larger than those of the isolated cylinder, for both fluid-forces for them are different. It is difficult to measure the fluid-force coefficients for the downstream cylinder at high Reynolds numbers, but at the same Reynolds nmbers, we are rich in those for the isolated cylinder. Differences of the fluid-force coefficients for both isolated cylinder and downstream cylinder being analysed, a relation between the two parts is obtained in this paper. Furthermore, the fluid-force coefficients of calculation and compared with those of experiment in this paper. The done work provides a base for calculating the responses of the downstream cylinder at high Reynolds numbers.更多还原