Role of bubble growth dynamics on microscale heat transfer events in microchannel flow boiling process
Role of bubble growth dynamics on microscale heat transfer events in microchannel flow boiling process
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DOI：
10.1063/1.4937568
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发表时间：
2015-12-14
影响因子：
4
通讯作者：
Moghaddam, Saeed
中科院分区：
文献类型：
--
作者：
Bigham, Sajjad;Moghaddam, Saeed
近二十年来，微通道流动沸腾换热过程一直是众多研究的主题。人们进行了大量的实验研究，以破译这一过程的潜在物理原理，并提出了不同的假设来描述其微观细节。尽管做出了这些努力，但现有假说的基本假设在很大程度上仍未得到检验。在这里，我们利用一种独特的测量方法提供的微观水平的数据，将沸腾传热过程解构为一套基本机制，并解释它们在整体表面传热中的作用。然后，我们展示了这些知识如何将气泡生长和流动动力学与表面热通量联系起来。(C) 2015 AIP出版有限责任公司
For nearly two decades, the microchannel flow boiling heat transfer process has been the subject of numerous studies. A plethora of experimental studies have been conducted to decipher the underlying physics of the process, and different hypotheses have been presented to describe its microscopic details. Despite these efforts, the underlying assumptions of the existing hypothesis have remained largely unexamined. Here, using data at the microscopic level provided by a unique measurement approach, we deconstruct the boiling heat transfer process into a set of basic mechanisms and explain their role in the overall surface heat transfer. We then show how this knowledge allows to relate the bubble growth and flow dynamics to the surface heat flux. (C) 2015 AIP Publishing LLC.