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Report No.

Numerical research on fluid mixing characteristics in a non-heated parallel channel by supercritical freon

Kitamura, Tatsuaki*; Sakamoto, Kensaku ; Takase, Kazuyuki

In the thermal-hydraulic design of supercritical water-cooled reactors, it is required to establish a thermal-hydraulic analysis method which can simulate the heat transfer and fluid flow characteristics of supercritical fluids precisely. A crossing flow is a phenomenon in which the fluid flowing through the inside of a fuel bundle in the perpendicular direction moves between subchannels to a transverse direction. The crossing flow influences the removal heat of a reactor core greatly. In the present study, results of the preliminary crossing flow simulation are described.



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