著者

井上 剛志 堀部 朋宏 内海 政春 安達 和彦

出版者

一般社団法人 ターボ機械協会

雑誌

ターボ機械 (ISSN:03858839)

巻号頁・発行日

vol.40, no.6, pp.359-369, 2012 (Released:2015-03-27)

参考文献数

11

被引用文献数

1

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A finite-element model is derived for high-pressure fuel turbopump(HPFTP)rotor system. It considers the effects of gyro-moment, axial force and rotor dynamic fluid forces acting on the impellers, the inducer, the seal, and the turbine. The damped natural frequencies, real parts of eigenvalues, and mode shapes of the rotor system are analysed over the range of 0∼45,000rpm and the results are validated by comparing them with existing experimental data. The effects of gyro-moment, axial force and rotor dynamic fluid forces on the dynamical characteristics of the system are investigated. As a result, it is shown that axial force has a small effect and is considered negligible, wheareas gyro-moment and rotor dynamic fluid force have a relatively large effect on the dynamical characteristics of the rotor system. The frequency response curve of the unbalance response of HPFTP is also obtained using a numerical simulation and the results correspond to its actual vibration phenomenon.