Abstract
The excitation mechanism of a self-excited oscillation due to the fluid discharge over a flexible werir was investigated both theoretically and experimentally. A new type of hydroelastic instability was discovered during test operations of the Super-Phenix LMFBR reactor in France. According to a recent report by Aita, this phenomenon includes two types of instability modes: one is the sloshing mode which means the oscillation of a weir associated with coupled sloshing modes of both feeding and restitution fluid collectors; the other is a hydroelastic mode which means the oscillation of a weir associated with fluid-shell modes. In this report, the excitation mechanism of a hydroelastic mode is discussed by calculating the excitation energy brought by discharge to the fluid-structure system. The theoretical results for the range of hydroelastic mode instability virtually agreed with the experimental data.
Original language | English |
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Pages (from-to) | 1094-1100 |
Number of pages | 7 |
Journal | Transactions of the Japan Society of Mechanical Engineers Series C |
Volume | 56 |
Issue number | 525 |
DOIs | |
Publication status | Published - 1990 |
Externally published | Yes |
Keywords
- FBR
- Fluid Vibration
- Theory of Vibration
- Weir
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering