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首页> 外文期刊>International Journal of Heat and Mass Transfer >Condensation of a bubble train in immiscible liquids
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Condensation of a bubble train in immiscible liquids

机译：不混溶液体中气泡序列的冷凝

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摘要

We previously developed a theoretical envelope model for single bubbles condensing in immiscible liquids, in which the convection outside the bubble is conducted through boundary layers at the front of the bubble and through the wake at the rear while the bubble accelerates, and the convection is dominated by heat transfer through the wake all over the bubble while the bubble is enveloped by its own wake at decelerating. In this paper the envelop model is extended for bubble train condensing in immiscible liquids by assuming that the envelopment occurs from start, i.e., the bubble is enveloped by the previous bubble's wake right after detachment from the nozzle. The experimental results for freon-113 and hexane bubbles condensing in water confirm the assumption for injection frequencies higher than 12 bubbles per second.
机译：我们之前针对单个气泡在不混溶液体中的冷凝建立了理论包络模型，其中气泡外部的对流通过气泡前面的边界层进行，并在气泡加速时通过后面的尾流进行，并且对流占主导地位通过气泡的整个尾流传热，同时气泡在减速时被其自身的尾流所包裹。在本文中，通过假设包封从一开始就发生，即在气泡从喷嘴分离后立即被前一个气泡的尾迹包围，包络模型被扩展以用于在不混溶的液体中进行气泡凝结。氟利昂113和己烷气泡在水中冷凝的实验结果证实了注入频率高于每秒12个气泡的假设。

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