温宇,朱春英,付涛涛,马友光

• 1:天津大学化工学院化学工程联合国家重点实验室天津化学化工协同创新中心

摘要(Abstract)：

采用高速摄像仪对不等宽T型分岔微通道中气泡的破裂和体积分配规律进行了研究,分别考察了气液流量与液相黏度对气泡分配规律的影响,同时研究了子气泡对气泡破裂的反馈效应。结果表明:由于微通道下游子气泡对分岔口处气泡破裂的反馈效应,两个子气泡体积分配比V_2/V_1随气液流量比的增大呈先增大后减小的非线性变化趋势。随无量纲母气泡体积V_0/w_0~2h的增大,V_2/V_1也呈先增大后减小的变化趋势,并且存在一个临界无量纲母气泡体积(V_0/w_0~2h)c。在实验范围内,气液流量比对(V_0/w_0~2h)c的影响较大,而液相黏度对(V_0/w_0~2h)c的影响可以忽略。提出了子气泡体积分配比的关联式,计算值和实验结果吻合良好。

关键词(KeyWords)： 微通道;气泡;破裂;分配

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(21276175,21106093);; 天津市自然科学基金(13JCQNJC05500)

作者(Author): 温宇,朱春英,付涛涛,马友光

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