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Report No.

Advanced modeling of the contact area correlation between sodium and water with the particle interaction method

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

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 in very high pressure. If the water or steam is issued in 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 compute the phenomena. In our previous investigations, mesoscopic and direct analysis method has been developed by using the particle interaction method in order to compute multi-phase, multi-component, and chemically interactive fluids. With this method, flow regime and contact areas concentration were investigated and a correlation model for a liquid jet flow issued into another liquid was made. In this fiscal year, the correlation model was investigated in detail to give higher accuracy prior to developing the correlation for a gas jet flow issued into liquid. Furthermore, the experiment of gas jet flow issued into liquid was analyzed with the particle interaction method to confirm applicability to gas-liquid system.



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