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Report No.

Analysis of the flow with sodium-water chemical reaction by the particle interaction method

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

To evaluate the effect of accidents induced by sodium-water chemical reaction on a LMFR component, the numerical thermo-hydraulic analysis should involve the whole boundary of the component. Therefore, the thermo-hydraulic code is required to model the chemically reactive fluids dynamics with constitutive correlations.Both thermal and chemical reaction rate largely depends on the binary contact areas between components such as continuous liquids, droplets, solid particles, and bubbles. The contact areas change sharply according to the interface state between components. Since no experiment to investigate the jet flow with sodium-water chemical reaction has been done, the purpose of this study is to develop the evaluation method for flow regimes and contact areas by analyzing the fluid dynamics of multi-phase and reactive components mechanistically with the particle interaction method. In this fiscal year, following works were performed:(1) investigation to link the mesoscopic information of contact areas obtained by the particle interaction method with the macroscopic fluid dynamics code, (2) development of the correlation of contact areas, (3) investigation of the effect of the water-leak conditions on contact areas, and (4) analysis of contact areas for a slug flow.



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