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Mizutani, Jun*; Takamura, Hiroyuki*; Ebara, Shinji*; Hashizume, Hidetoshi*; Yamano, Hidemasa
no journal, ,
In cold leg piping of primary cooling system of Japan Sodium-cooled Fast Reactor (JSFR), high Reynolds (Re) number and three dimensional arrangement of 3 elbow structure forms complex turbulent flow field, and pressure fluctuation induced by separation vortex release is postulated. inhibition of the separation is considered to lower the pressure fluctuation and changing inflow condition indicated possibility of inhibiting pressure fluctuation. In this study, 1/7 scale flow testing device simulating JSFR primary cold-leg piping was used to study conditions to reduce separation.