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Na冷却高速炉における大口径配管の流力振動評価に関する研究,39; コールドレグ1/7縮尺流動試験装置を用いた1段及び2段エルボ管内流れPIV計測による複数エルボ効果の検証

Study on flow-induced vibration evaluation of large-diameter piping in a sodium-cooled fast reactor, 39; Estimation of multiple-elbow effect by means of PIV measurement applied to single and dual elbow flows by using a 1/7-scale model of the cold-leg piping

高村 宏行*; 江原 真司*; 橋爪 秀利*; 山野 秀将   

Takamura, Hiroyuki*; Ebara, Shinji*; Hashizume, Hidetoshi*; Yamano, Hidemasa

本研究では、低曲率半径比の3段エルボ構造で特徴づけられるJSFRの一次冷却系コールドレグ配管を模擬した2段エルボ体系で高レイノルズ数条件のもと2次元PIV計測実験を行い、1段エルボ体系の流動構造を比較することにより複数エルボ効果について調べた。

In this study, dual elbow under high Reynolds number condition was experimented by two-dimensional PIV measurement simulating the primary cold leg piping of JSFR characterized by the low curvature ratio tremble elbow structure to compare single elbow flow with the dual elbow to study multiple-elbow effect.

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