Visualization of Two-Phase Flows in Nanofluid Oscillating Heat Pipes
Visualization of Two-Phase Flows in Nanofluid Oscillating Heat Pipes
复制标题
纳米流体振荡热管中两相流的可视化
DOI：
10.1115/1.4003043
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发表时间：
2011-05
影响因子：
--
通讯作者：
Wang, Bu-Xuan
中科院分区：
文献类型：
--
作者：
Li, Qi-Ming;Zou, Jiang;Yang, Zhen;Duan, Yuan-Yuan;Wang, Bu-Xuan
对充满去离子水和纳米流体(0.268%v/v)的振荡热管内的两相流动进行了实验研究。OHP由石英玻璃管(内径3.53 mm，外径5.38 mm)制成，蒸发段涂有透明加热膜。用电荷耦合器件(CCD)摄像机记录了不同热负荷下的内部两相流动。随着热负荷的增加，在DI水OHP中只观察到柱状流，而在纳米流体OHP中，首先是柱状流，然后是弹状流和环状流。OHP内的换热与两相流区有很强的相关性。流型的转变有效地提高了纳米流体OHP中的操作允许热负荷，与DI水OHP相比增加了两到三倍。纳米流体OHP具有比DI水OHP低得多的热阻，其中最有效的换热发生在段塞流区域。
Two-phase flows in an oscillating heat pipe (OHP) charged with deionized (DI) water and a nanofluid (0.268% v/v) were experimentally investigated. The OHP was made of quartz glass tube (with an inner diameter of 3.53 mm and an outer diameter of 5.38 mm) and coated with a transparent heating film in its evaporating section. The internal two-phase flows at different heat loads were recorded by a charge-coupled device (CCD) camera. Only column flow was observed in the DI water OHP while in the nanofluid OHP the flow first was column, then slug and annular flows as the heat load was steadily increased. Heat transfer in the OHP was strongly related to the two-phase regime. The flow regime transitions effectively increased the operating allowable heat loads in the nanofluid OHP two- to threefold relative to the DI water OHP. The nanofluid OHP had a much lower thermal resistance than the DI water OHP with the most effective heat transfer in the nanofluid OHP occurring in the slug flow regime.
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DOI：
10.1016/j.ijmultiphaseflow.2007.06.009
发表时间：
2007-12-01
影响因子：
3.8
作者：
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通讯作者：
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DOI：
10.1115/ht2008-56160
发表时间：
2010-06
期刊：
Journal of heat transfer
影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
4
作者：
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通讯作者：
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影响因子：
4
作者：
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