2006 Fiscal Year Final Research Report Summary

Study on the unstable vibration of axial turbine and centrifugal compressor.

Research Project

Project/Area Number	16360116
Research Category	Grant-in-Aid for Scientific Research (B)
Allocation Type	Single-year Grants
Section	一般
Research Field	Dynamics/Control
Research Institution	Kobe University
Principal Investigator	KANKI Hiroshi Kobe University, Faculty of Engineering, Professor, 工学部, 教授 (00273764)
Co-Investigator(Kenkyū-buntansha)	ADACHI Kazuhiko Kobe University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (30243322) KAWANISHI Michihiro Toyoda Engineering University, Undergraduate school of Engineening, Associate Professor, 工学部, 助教授 (00283870)
Project Period (FY)	2004 – 2006
Keywords	axial turbine / centrifugal compressor / unstable vibration / labyrinth seal
Research Abstract	The target of this study is to solve the phenomena of unstable vibration in axial turbine and centrifugal compressor. For the axial turbine, the unstable vibration was solved and the several counter measure were proposed and confirmed. Especially partial admission effects are fully studied. For the centrifugal compressor, special experimental model was developed to solve the phenomena of unstable vibrations. The experimental study is still continued. As a conclusion, the unstable vibration of the axial turbine was solved, however, the unstable vibration of centrifugal compressor still has difficulty for fully understanding. The study will be continued many years.

(4 results)