微尺度相变传热中的不稳定现象

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Publication date
1 January 2007
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Abstract

实验发现了微通道在高热流密度下会发生一种长周期／大幅度液体／两相间歇流。它发生在贮液容器内的液体处于近乎饱和温度的条件下，表现出实验段压差，质量流速，通道进出口温度及壁温作有规律的长周期及大幅度脉动。通道内随时间发生液体和两相流的间歇流动。实验证实该类流动是由于通道内质量流速与入口温度间的负反馈效应引起的

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