B221 均質核生成沸騰の数値シミュレーション(固液相変化を伴う伝熱現象V)

概要

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The process of rapid liquid heating with time dependent boundary temperature condition has been simulated by using the idea of ID semi-infinite heat conduction in conjunction with theory of homogeneous nucleation boiling. A control volume adjacent to the boundary and having the size of critical cluster is considered and the corresponding energy balance is made for two parallel competing processes taking place inside: transient external heat addition and internal vaporization heat consumption due to bubble nucleation and subsequent growth. Results obtained are presented in terms of the maximum attainable liquid temperature and the corresponding time to reach the temperature limit. For water heating with the identical initial and boundary conditions as reported in some literatures, the model results are found to be in good agreement with the experimental counterparts for lower boundary temperature rising rates. However, for higher values of boundary temperature rising rate, the model predicts earlier attainment of maximum liquid temperature and boiling explosion.
一般社団法人日本機械学会の論文
2009-11-06