Numerical study on flow induced vibration of LOX post in liquid rocket engine preburner

Chihiro Inoue, Toshinori Watanabe, Takehiro Himeno

研究成果: Contribution to journalArticle査読

1 被引用数 (Scopus)

抄録

In a preburner of liquid rocket engines, some liquid-oxygen (LOX) posts, which introduced oxygen into combustion chamber, experienced severe flow-induced vibration due to unsteady cryogenic hydrogen flow. The mechanism of the vibration has not been fully understood because of the complexity of the flow field. In the present study, a new numerical method was developed to analyze the flow field of hydrogen, whose characteristic properties lie in its non-idealness and compressibility. The unsteady hydrogen flow inside the preburner unit was analyzed to investigate the details of hydrogen flow field as well as the mechanism of LOX post vibration. It was clarified that hydrogen flow inside the manifold and fluid dynamic forces on LOX posts were strongly affected by vortices shed from the junction at the upstream of the inlet. A baffle plate put inside the manifold was shown to reduce unsteady fluid forces on the LOX posts.

本文言語英語
ページ(範囲)22-29
ページ数8
ジャーナルInternational Journal of Gas Turbine, Propulsion and Power Systems
1
1
出版ステータス出版済み - 10 1 2007
外部発表はい

All Science Journal Classification (ASJC) codes

  • 機械工学

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