Simultaneous measurement of liquid film thickness and temperature on metal surface

doi:10.1016/j.saa.2021.119804

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	Simultaneous measurement of liquid film thickness and temperature on metal surface
	W. W. Wu; S. S. Kong; X. Y. Xu; J. Tao; C. L. Li; J. Y. Wang; M. X. Su and H. N. Yang
	2021
发表期刊	Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
ISSN	1386-1425
卷号	257 页码:7
摘要	The flow and evaporation of liquid films widely exist in various industrial fields. The investigation into liquid films is essential to design and optimize the relevant industrial processes. In this work, a simultaneous measurement method of liquid film thickness and temperature on metal surface based on diode laser absorption spectroscopy (DLAS) was proposed, and a corresponding measurement system was developed. First, static liquid films of 200-800 mu m on the horizontal metal plate were studied, ultrasonic pulse-echo method (UPEM) and thermocouple were employed to compare with DLAS data. It revealed that the relative deviations of film thicknesses and temperatures measured by different methods were 3.3% and 2.0%, respectively. Furthermore, the evaporation processes of static liquid films were investigated. For the liquid films with different initial thicknesses (490.0/624.6/744.5 mu m), the average relative deviations of the film thicknesses and temperatures measured by different methods were 0.1%/0.8%/4.1% and 0.1%/2.6%/3.0%, respectively. Finally, the flow processes of liquid films at different initial temperatures (40.0/60.0/80.0 degrees C) on the inclined metal plate were researched. It was found that the variation trends of the liquid film thicknesses and temperatures measured by different methods were in good agreement. In the stable stages of flow processes, the average relative deviations of liquid film thicknesses and temperatures measured by different methods were 9.0%/8.4%/5.1% and 3.6%/1.2%/2.5%, respectively. This work is helpful to understand the heat and mass transfer mechanisms in the evaporation and flow processes of liquid films. (C) 2021 Elsevier B.V. All rights reserved.
DOI	10.1016/j.saa.2021.119804
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收录类别	SCI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65632
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	W. W. Wu,S. S. Kong,X. Y. Xu,et al. Simultaneous measurement of liquid film thickness and temperature on metal surface[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2021,257:7.
APA	W. W. Wu.,S. S. Kong.,X. Y. Xu.,J. Tao.,C. L. Li.,...&M. X. Su and H. N. Yang.(2021).Simultaneous measurement of liquid film thickness and temperature on metal surface.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,257,7.
MLA	W. W. Wu,et al."Simultaneous measurement of liquid film thickness and temperature on metal surface".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 257(2021):7.

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