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Effects of separation vortices on pressure fluctuation of complex turbulent flow in a dual elbow with small curvature radius in a three-dimensional layout

3次元レイアウトでの曲率半径の小さな2段エルボの複雑乱流の圧力変動によるはく離渦の影響

江原 真司*; 今野 宏章*; 橋爪 秀利*; 金子 哲也; 山野 秀将  

Ebara, Shinji*; Konno, Hiroaki*; Hashizume, Hidetoshi*; Kaneko, Tetsuya; Yamano, Hidemasa

本論文では、JSFRコールドレグ配管をシミュレートし2エルボ配管での圧力変動特性を縮尺モデルによる圧力計試験を行って解明した。実験の結果、2エルボ配管での圧力変動特は第一エルボ内及び近傍の1エルボ流動と類似することがわかった。

In this study, the characteristics of pressure fluctuation in a dual elbow piping simulating the cold-leg piping of the JSFR was elucidated by conducting a pressure measurement test using a scale model. As a result of the experiment, it was clarified that the pressure fluctuation characteristics of the dual elbow flow was very similar to that of the single elbow flow in and near the first elbow.

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