256 高圧ガス中における遠心圧縮機羽根車の固有振動数(流体構造連成振動のメカニズムと計測制御,OS-22 流体関連振動・音響メカニズムと計測制御,総合テーマ「伝統を,未来へ!」)

概要

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To predict natural frequencies of high-pressure centrifugal compressor impellers accurately, we measured the natural frequencies of an impeller vibrating in a high-pressure gas environment. In order to clarify the effect of gaseous species, we used four different gasses as the surrounding gas. It is known that natural frequencies of pump impellers in water decrease compared with their natural frequencies in air due to the added mass effect. However, in our experiments in a high-pressure gas environment, the natural frequencies of the impeller not only decreased but also increased compared with those conducting under atmospheric condition.
一般社団法人日本機械学会の論文
2010-09-14