弁直下に置かれた配管内円柱構造物のランダム振動 : 第2報,流体励振力の把握(流体工学,流体機械)

概要

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This paper describes the random vibration of a cylindrical structure in a pipe located just downstream of a valve. The cylindrical structure is a cantilevered circular pipe, and the root stress, the acceleration of the pipe and the fluctuating velocity are measured with the flow velocity. The non-dimensional power spectrum density and the exciting force coefficient of the fluctuating force acting on the cylindrical structure were obtained by using measured data and the expression shown in the JSME standard. As a result, it was found that the exciting force coefficient was very large compared with C' = 0.13 which was given by the JSME standard and it was approximately proportional to the turbulent intensity.
一般社団法人日本機械学会の論文
2003-08-25