日本機械学会論文集
Online ISSN : 2187-9761
熱工学,内燃機関,動力エネルギーシステム
格子ボルツマン法によるジェットブレイクアップ挙動解析
松尾 英治阿部 豊岩澤 譲海老原 健一小山 和也
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2015 年 81 巻 822 号 p. 14-00409

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In order to understand the jet breakup behavior of the molten core material into coolant during a core disruptive accident (CDA) for a sodium-cooled fast reactor (SFR), we simulated the jet breakup due to the hydrodynamic interaction using the lattice Boltzmann method (LBM). The applicability of the LBM to the jet breakup simulation was validated by comparison with our experimental data. In addition, the influence of several dimensionless numbers such as Weber number and Froude number was examined using the LBM. As a result, we validated applicability of the LBM to the jet breakup simulation, and found that the jet breakup length is independent of Froude number and in good agreement with the Epstein's correlation when the jet interface becomes unstable.

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