Observations of high temperature impinging-jet boiling phenomena
Observations of high temperature impinging-jet boiling phenomena
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DOI：
10.1016/j.ijheatmasstransfer.2004.12.011
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发表时间：
2005-05
影响因子：
5.2
通讯作者：
P. Woodfield;M. Monde;A. Mozumder
中科院分区：
文献类型：
--
作者：
P. Woodfield;M. Monde;A. Mozumder
利用高速摄像机和麦克风对自由表面水射流冲击高温表面时的流动行为和沸腾声进行了拍摄。结果发现，取决于表面的粗糙度，出现了相当不同的流动模式。在初始表面温度高于约300°C的情况下，几乎出现爆炸模式。这与稍低的温度形成对比，在该温度下液体片流结构是明显的。现象的变化伴随着沸腾声的突然变化和传热速率的增加。
A high-speed video camera and microphone were used to capture the flow behavior and boiling sound of a free-surface water jet impinging on a high temperature surface during quench cooling. It was found that depending on the superheat of the surface considerably different flow patterns appeared. For cases where the initial surface temperature was above about 300°C an almost explosive pattern appeared. This was in contrast to slightly lower temperatures where a liquid sheet flow structure was apparent. The change in phenomena was accompanied by a sudden change in the boiling sound and an increase in the heat transfer rate.