Spatial distribution of heat transfer coefficient in the vicinity of wetting front during falling liquid film cooling of a vertical hot wall
Spatial distribution of heat transfer coefficient in the vicinity of wetting front during falling liquid film cooling of a vertical hot wall
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垂直热壁降液膜冷却润湿锋附近传热系数的空间分布
DOI：
10.1016/j.ijheatmasstransfer.2021.122422
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发表时间：
2022
影响因子：
5.2
通讯作者：
Okawa Tomio
中科院分区：
文献类型：
--
作者：
Umehara Yutaro;Yamagata Keisuke;Okawa Tomio
润湿锋附近传热系数（HTC）的空间分布对于预测高温固体表面液膜冷却过程中的润湿速度至关重要。然而，主要由于缺乏实验数据，到目前为止，尚未针对这种基本热水力情况下的 HTC 分布开发出足够可靠的模型。在本工作中，使用高速红外相机进行了实验，以测量具有下落液膜的高温垂直壁润湿期间壁温度分布的瞬态。基于根据测量的温度数据计算出的 HTC 分布，对润湿锋附近的 HTC 分布建立了无量纲相关性。经证实，使用所提出的相关式计算出的润湿锋的传播速度（润湿速度）与本工作中积累的实验数据非常吻合。
Spatial distribution of the heat transfer coefficient (HTC) in the vicinity of the wetting front is of crucial importance in predicting the wetting velocity during liquid film cooling of a high-temperature solid surface. However, mainly due to the lack of experimental data, no sufficiently reliable model has been developed so far for the HTC distribution in this fundamental thermal-hydraulic situation. In the present work, experiments using a high-speed infra-red camera were carried out to measure the transient of wall temperature distribution during wetting of a high-temperature vertical wall with a falling liquid film. Based on the HTC distributions calculated from the measured temperature data, dimensionless correlations were developed for the HTC distribution near the wetting front. It was confirmed that the propagation velocities of the wetting front (wetting velocity) calculated using the proposed correlations agree with the experimental data accumulated in this work well.
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影响因子：
1.7
作者：
E. Elias;G. Yadigaroglu
通讯作者：
G. Yadigaroglu
热平衡积分法综合分析传导控制再润湿
DOI：
10.1016/j.ijheatmasstransfer.2006.05.038
发表时间：
2006
期刊：
影响因子：
--
作者：
S. Sahu;P. Das;S. Bhattacharyya
通讯作者：
S. Bhattacharyya
干热斑再润湿过程中湿侧传热系数分析
DOI：
10.1016/0029-5493(72)90163-x
发表时间：
1972
期刊：
影响因子：
--
作者：
T. Thompson
通讯作者：
T. Thompson
下降液膜对热表面的再润湿——液体过冷的影响
影响因子：
5.2
作者：
Ueda Tatsuhiro;indue Mitsuru
通讯作者：
indue Mitsuru
DOI：
10.1016/j.ijheatmasstransfer.2005.06.034
发表时间：
2005-12
影响因子：
5.2
作者：
A. Mozumder;M. Monde;P. Woodfield
通讯作者：
A. Mozumder;M. Monde;P. Woodfield