OS8-3 高速炉ガス巻込み現象に関する数値的研究(OS8 軽水炉・新型炉・核燃料サイクル,循環型社会における動力エネルギー技術)

概要

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Gas Entrainment (GE) phenomena in the basic experimental apparatus were studied numerically to make clear the dominant parameters on the GE phenomena that might occur in FBRs. In the numerical simulations, the PLIC type VOF model was employed to calculate these complicated free surface behaviors. The result of numerical simulation under the experimental conditions was compared to the experimental results to evaluate the accuracy of the numerical method. In addition, sensitivities of the suction velocity and the geometric configuration around the suction mouth on the GE behaviors were investigated. As a result, the numerical simulation showed good agreement with experimental data. In addition, two types of the GE were observed in this simulation result; bubble entrainment and gas core connection types. The geometric configuration around the suction mouth also affected the GE behavior through the suction flow direction. These simulation results implied that the numerical simulation has enough potential to be used for the GE investigation.
2007-06-13