曲がり管で発生する二次流れの配管合流部における高サイクル熱疲労への影響
英字タイトル:
Effect of secondary flow generated in 90-dgree bend upon high-cycle thermal fatigue in a mixing tee
著者:
小原 啓 Hiroshi OHARA 結城 和久 Kazuhisa YUKI 橋爪 秀利 Hidetoshi HASHIZUME S. M. Hosseini
発刊日:
公開日:
degree bendHigh-cycle thermal fatigueSecondary flowT-junction
Effect of secondary flow generated in 90-dgree bend upon high-cycle thermal fatigue in a mixing tee
著者:
小原 啓 Hiroshi OHARA 結城 和久 Kazuhisa YUKI 橋爪 秀利 Hidetoshi HASHIZUME S. M. Hosseini
発刊日:
公開日:
カテゴリ: 第3回
キーワードタグ:degree bendHigh-cycle thermal fatigueSecondary flowT-junction
概要
In nuclear power plants, there are many T-junctions at which different temperature fluids are mixed. When the fluids with different temperature are mixed, temperature fluctu ation in fluids reachs wall and high-cycle heat fatigue occurs. Depending on amplitude and frequency of temperature fluctuation, it could lead to pipe rupture accident at wo rst. In addition, in case of the T-junction with 90-degreee bend at upstream, there is higher risk for pipe rupture accident due to secondary flow which arises in the 90-degr ee bend. In this study, the effects of temperature fluctuation above the T-junction in case of different distance of 90-dgree bend outlet to the T-junction are investigated.
