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首页> 外文期刊>International Journal of Heat and Fluid Flow >The influence of the bulk liquid thermal boundary layer on saturated nucleate boiling
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The influence of the bulk liquid thermal boundary layer on saturated nucleate boiling

机译：大块液体热边界层对饱和核沸腾的影响

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摘要

A physical model for vapor bubble growth in saturated nucleate boiling has been developed that includes both heat transfer through the liquid microlayer and that from the bulk superheated liquid surrounding the bubble. Both asymptotic and numerical solutions for the liquid temperature field surrounding a hemispherical bubble reveal the existence of a thin unsteady thermal boundary layer adjacent to the bubble dome. During the early stages of bubble growth, heat transfer to the bubble dome through the unsteady thermal boundary layer constitutes a substantial contribution to vapor bubble growth. The model is used to elucidate recent experimental observations of bubble growth and heat transfer on constant temperature microheaters reported by Yad-danapudi and Kim [Multiphase Sci. Technol. 12(3-4) (2001) 47] and confirms that the heat transfer through the bubble dome can be a significant portion of the overall energy supply for the bubble growth.
机译：已经开发了在饱和核沸腾中蒸气气泡生长的物理模型，该模型既包括通过液体微层的传热，也包括来自围绕气泡的整体过热液体的传热。围绕半球形气泡的液体温度场的渐近解和数值解都表明，在气泡穹顶附近存在一个不稳定的薄热边界层。在气泡生长的早期，热量通过不稳定的热边界层传递到气泡穹顶对蒸气气泡的生长起了重要作用。该模型用于阐明Yad-danapudi和Kim [Multiphase Sci。技术。 12（3-4）（2001）47]，并确认通过气泡穹顶的热传递可能是气泡增长的总能量供应的重要部分。

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