直交気液二相流による円柱の振動に関する研究 : 第3報,イン・ライン振動応答特性と気はうの制振および励振効果

概要

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We experimentally examined the response characteristics of a circular cylinder's in-line vibrations induced by a two-phase air-water cross flow with respect to the flow velocity, void fraction, and air bubble size. Experiments showed the following major results : (1) Vibrational response magnitude increased rapidly, with the two-phase flow's void fraction volumetrically exceeding about 10% for each flow velocity. (2) This response was comparatively small and less dependent on the void fraction for void fractions under 10%. (3) Air bubbles in the two-phase flow drastically reduced in-line vibrations when the reduced velocity was about 2 and the void fraction was less than 10%. (4) Air bubble size slightly influenced response characteristics and the reduction in vibration.
一般社団法人日本機械学会の論文
1983-09-25