S054093 ナトリウム冷却高速炉1次系ホットレグ配管の流力振動評価(3) : 圧力変動PSD及び相関長に基づくランダム振動評価手法([S05409]噴流,後流,およびはく離流れの基礎と応用:最前線(9))
書誌事項
- タイトル別名
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- S054093 Evaluation for Flow-Induced Vibration of a Primary Circuit Hot-Leg Piping in a Sodium-Cooled Fast Reactor : (3) Evaluation Method for Random Vibration Based on PSD and Correlation Length of Pressure Fluctuation
抄録
The primary hot-leg piping with a large-diameter is designed with high coolant velocity (9m/s). To reduce thermal stress, the primary hot-leg piping with large diameter is designed to be thin. Hot-leg piping adopts an L-shaped short elbow. The turbulence generated by flow separation in the short elbow may raise a flow-induced vibration issue. It is necessary to evaluate and confirm the integrity of piping against the flow-induced vibration. In order to evaluate the integrity, evaluation method for random vibration based on PSD and correlation length of pressure fluctuation, which were measured by 1/3 scale hot-leg piping experiments under rectified flow, swirl flow and defected flow, was developed. In this paper, a summary of the random vibration evaluation method, a scope of application, pressure fluctuation characteristics used for this method and a safety margin are described. Flow induced vibration of a primary circuit hot-leg piping can be evaluated with this random vibration evaluation method conservatively.
収録刊行物
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- 年次大会
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年次大会 2011 (0), _S054093-1-_S054093-5, 2011
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390282680816416512
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- NII論文ID
- 110009759938
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- ISSN
- 24242667
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- Crossref
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- 抄録ライセンスフラグ
- 使用不可