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Report No.

Analysis of the flow with phase change and chemical reaction with the paticle interaction method (Report under the contract between JNC and toshiba Corporation)

Shirakawa, Noriyuki*; not registered; not registered

The numerical thermohydraulic analysis of a LMFR component should involve its whole boundary in order to evaluate the effect of chemical reaction within it. Therefore, it becomes difficult mainly due to computing time to adopt microscopic approach for the chemical reaction directly. Thus, the thermohydraulic code is required to model the chemically reactive fluid dynamics with constitutive correlations. The reaction rate 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 experiments to study the jet flow with sodium-water chemical reaction have been done, the goal of this study is to obtain the knowledge of flow regimes and contact areas by analyzing the fluid dynamics of multi-pahse and reactive components mechanistically with the particle interaction method. In this fiscal year, following works were performed: (1)Development and coding of the interfacial area model, (2)Development and coding of the phase change model, (3)Verification of the fundamental functions of the models, and (4)Literature investigation of the related experiments.



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