ABSTRACT

The Particle Image Velocity method was used to investigate the velocity fields when the liquid layer height changed from 0.6 to 5.1 mm. The loss of stability of the velocity field during local heating is realized at the Bond number (Bo) 0.01–0.02, which is 10–20 times lower than the critical value of Bo(cr) compared to heat exchange at a uniform wall temperature. The Marangoni flow depends both on the height and the layer diameter. The critical height of the layer 2–2.5 mm leads to a sharp change in the flow pattern.

中文翻译：

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液层高度对局部加热过程中速度场和蒸发的影响

摘要

粒子图像速度方法用于研究液层高度从 0.6 到 5.1 mm 变化时的速度场。局部加热过程中速度场稳定性的丧失在键数 ( Bo ) 0.01–0.02 时实现，与均匀壁温下的热交换相比，它比Bo(cr)的临界值低 10–20 倍。Marangoni 流取决于高度和层直径。层的临界高度 2-2.5 mm 导致流动模式的急剧变化。