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首页> 外文期刊>International Journal of Heat and Mass Transfer >Study of bubble growth in water pool boiling through synchronized, infrared thermometry and high-speed video
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Study of bubble growth in water pool boiling through synchronized, infrared thermometry and high-speed video

机译：通过同步红外测温和高速视频研究水池沸腾中气泡的生长

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High-speed video and infrared thermometry were used to obtain time- and space-resolved information on bubble nucleation and heat transfer in pool boiling of water. The bubble departure diameter and frequency, growth and wait times, and nucleation site density were directly measured for a thin, electrically-heated, indium-tin-oxide surface, laid on a sapphire substrate. These data are very valuable for validation of two-phase flow and heat transfer models, including computational fluid dynamics with interface tracking methods. Here, detailed experimental bubble-growth data from individual nucleation sites were used to evaluate simple, commonly-used, but poorly-validated, bubble-growth and nucleate-boiling heat-transfer models. The agreement between the data and the models was found to be reasonably good. Also, the heat flux partitioning model, to which our data on nucleation site density, bubble departure diameter and frequency were directly fed, suggests that transient conduction following bubble departure is the dominant contribution to nucleate-boiling heat transfer.
机译：高速视频和红外测温法用于获得时间和空间分辨的有关池水沸腾中气泡成核和传热的信息。对于放置在蓝宝石衬底上的薄的，电加热的铟锡氧化物表面，可以直接测量气泡离开的直径和频率，生长和等待时间以及成核位置密度。这些数据对于验证两相流动和传热模型非常有价值，包括使用界面跟踪方法进行计算流体动力学分析。在这里，来自各个成核位置的详细实验气泡增长数据被用于评估简单，常用但验证不充分的气泡增长和核沸腾传热模型。数据与模型之间的一致性被认为是相当不错的。另外，直接提供我们关于成核点密度，气泡离开直径和频率的数据的热通量分配模型表明，气泡离开后的瞬态传导是成核沸腾传热的主要贡献。

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