1998 Fiscal Year Final Research Report Summary
General study of fluid forces and dynamic characteristics due to unsteady internal flow in turbomachine
| Project/Area Number |
08305005
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Osaka University |
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Principal Investigator |
TSUJIMOTO Yoshinobu Faculiy of Gay. Science Osaka Univ. Prof, 基礎工学部, 教授 (50112024)
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| Co-Investigator(Kenkyū-buntansha) |
FURUKAWA Akinori Kyushu Univ. Grand School of Eng. Pro, 工学部, 教授 (30112410)
KUROKAWA Jun-ichi Yokohama Nat. Univ. Grand School of Eng. Pro., 工学部, 教授 (40017976)
TSUKAMOTO Hiroshi Tokyo Univ. Grand School of Eng. Pro., 工学部, 教授 (50117305)
TANAKA Masato Nagoya Univ. Grand School of Eng. Pro., 工学部, 教授 (10011131)
KIKUYAMA Koji Osaka Univ. Grand School of Eng. Sci, Proffesser, 工学部, 教授 (90023192)
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| Project Period (FY) |
1996 – 1998
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| Keywords | Unsteady Fluid Force / Cavitation / Rotating Stall / Excitation / Turbo Pump / Whirling / 振れ回り |
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| Research Abstract |
Fluid forces and vibration characteristics caused by the unsteady internal flow in turbomachines were studied experimentally and analytically in several universities. Unsteady flow in turbomachines, in particular at off-design flow rate, due to the rotor-stator interaction, rotating stall, two-phase flow, rotating cavitation, cavitating flow, and rotordynamic forces as the response of the shaft vibration were examined and discussed. The present results could contribute for the reliance and the safety in high-speed and high-performance turbomachines. In future, several studies about these problems are necessary for more advanced machines, so that cooperation and continuous study are expected.
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