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ナトリウム冷却高速炉ホットレグ配管入口部における液中渦キャビテーションに関する研究,4; 基礎体系における液中渦周囲の流速分布計測結果

Study on cavitation due to sub-surface vortex at intake of hot-leg pipe in sodium cooled fast reactor, 4; Measurement of velocity distributions around vortex in fundamental geometry

江連 俊樹 ; 伊藤 啓; 小野島 貴光; 上出 英樹 

Ezure, Toshiki; Ito, Kei; Onojima, Takamitsu; Kamide, Hideki

液中渦キャビテーションついて、円筒の水体系における実験研究を実施した。水の動粘性係数及び吸込み管流速をパラメータとして数条件変化させ、鉛直及び水平断面における流速分布を定量化し、本体系での渦周辺部の循環の大きさは動粘性係数に依存せず、吸込み管流速に比例することを確認した。

Fundamental experiments about the vortex cavitation due to sub-surface vortex were carried out in geometry of a simple cylindrical tank with one suction pipe. Velocity distributions in vertical and horizontal planes around the vortex were grasped under several conditions of suction pipe velocity and kinematic viscosity. From the results, it is confirmed the circulation around the vortex in present geometry dose not depends on the variation of kinematic viscosity and varies proportionally to the variation of suction pipe velocity.

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