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Report No.

Evaluation of the correlation model for the contact areas concentration between sodium and steam with the particle interaction method

Horie, Hideki*; Yamamoto, Yuichi*; Oue, Masaya*; Shirakawa, Noriyuki*

In a LMFR steam generator, liquid sodium flows through the component vessel, which has a manifold of heat transfer tubes through which water or steam flows under very high pressure. If the water or steam is issued as a jet into sodium pool by the high pressure due to tube failure, sodium-water reaction occurs and affects the component integrity. The phenomena are strongly nonlinear processes in multi-phase flow. To evaluate contact areas concentration between fluid components is essential to analyze the phenomena. In this work, the correlation model for the contact areas concentration between two different liquids developed with the particle interaction method, which method is capable of evaluating the mixing layer between two kinds of fluid, was applied to a gasjet issued into a liquid pool to investigate its applicability. This investigation involves the analysis to consider the mole change of steam and generated gas due to the sodium-water chemical reaction and the analysis of the effect of a rod on the correlation model.



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