Liquid film thickness distribution detection based on transverse shear interferometry system

doi:10.16085/j.issn.1000-6613.2023-1379

Abstract

Abstract:

Measuring the thickness of liquid films has important applications in many scientific and engineering fields. In this paper, based on the transverse shear interferometry technique, the thickness distribution and time evolution of the triangular and rectangular vertical free-plane liquid films were investigated. The streak-tracking algorithm was used to process the interference images of the liquid film taken by a camera. Experimental results showed that the thickness of the triangular liquid film ranged 0.98—9.37μm, and the thickness of the rectangular liquid film ranged 0.1—13μm. Under the influence of gravity, the thickness of the liquid film gradually increased from top to bottom, and the thickness of the liquid film was uniformly distributed in the horizontal direction. With the passage of time, the overall thickness of the liquid film decreased gradually due to gravity drainage. The thickness of the weakest point at the top reached the minimum value of 0.08μm before the overall rupture of the rectangular liquid film. Further analysis of the rectangular liquid film reveals that the maximum volume of the film was 2.66mm³ and the maximum volumetric flow rate was 0.28mm³/s throughout the drainage process. In addition, the visualization of the surface flow field of the liquid film could be realized by the distribution change of the interference fringes, which provided a new research method for the study of the microscopic surface flow field of the liquid film.

Key words: lateral shearing interferometry, liquid film thickness, drainage, two-phase flow, optical measurement

摘要：

测量液体薄膜的厚度在众多科学和工程领域中都具有重要的应用价值。本文基于横向剪切干涉技术，通过条纹追踪算法对相机拍摄得到的液膜干涉图像进行处理，研究了三角形与矩形竖直自由平面液膜的厚度分布及时间演变。实验结果表明，三角形液膜厚度范围为0.98~9.37μm，矩形液膜厚度范围为0.1~13μm。受重力影响，液膜厚度从顶部到底部逐渐增大，而在水平方向上液膜厚度分布均匀。随着时间的推移，重力排液导致液膜整体厚度逐步减小，顶部最薄弱处厚度率先到达最小值0.08μm后液膜整体破裂。进一步对矩形液膜进行分析，整个排液过程中液膜最大体积为2.66mm³，最大体积流量为0.28mm³/s。此外，通过干涉条纹的分布变化可实现液膜表面流场可视化，为液膜微观表面流场研究提供了新的研究方法。

关键词: 横向剪切干涉, 液膜厚度, 排液, 两相流, 光学测量

CLC Number:

TK31

SHENG Wen, YU Bo, GUO Han, ZHOU Huaichun. Liquid film thickness distribution detection based on transverse shear interferometry system[J]. Chemical Industry and Engineering Progress, 2024, 43(2): 743-751.

盛稳, 余波, 郭晗, 周怀春. 基于横向剪切干涉系统的液膜厚度分布检测[J]. 化工进展, 2024, 43(2): 743-751.

Figures/Tables 12

References 31

1	郭洪波, 宫声凯, 徐惠彬. 先进航空发动机热障涂层技术研究进展[J]. 中国材料进展, 2009, 28(Z2): 18-26.
	GUO Hongbo, GONG Shengkai, XU Huibin. Progresss in thermal barrier coatings for advanced aeroengies[J]. Materials China, 2009, 28(Z2): 18-26.
2	陆广广. 新型电子元器件电极浆料组成与性能的研究[D]. 合肥: 合肥工业大学, 2009.
	LU Guangguang. Research on the composition and properties of newelectronic components electrode paste[D]. Hefei: Hefei University of Technology, 2009.
3	许鑫华, 程静, 张春怀, 等. 医用镁合金的生物腐蚀及高分子涂层处理[J]. 稀有金属材料与工程, 2008(7): 1225-1228.
	XU Xinhua, CHENG Jing, ZHANG Chunhuai, et al. Bio-corrosion and polymer coating modification of magnesium alloys for medicine[J]. Rare Metal Materials and Engineering, 2008(7): 1225-1228.
4	叶学民, 李明兰, 张湘珊, 等. 平板浸涂过程中的液膜排液影响因素[J]. 化工学报, 2019, 70(6): 2164-2173.
	YE Xuemin, LI Minglan, ZHANG Xiangshan, et al. Influencing factors of film drainage of dip-coating process[J]. Journal of Chemical Industry and Engineering, 2019, 70(6): 2164-2173.
5	王文武, 李春国, 王新军, 等. 金属表面流动液膜厚度的电导法测量技术研究[J]. 东方汽轮机, 2010(1): 21-25.
	WANG Wenwu, LI Chunguo, WANG Xinjun, et al. A study on measurement of thickness of thin liquid film on metal surfaces[J]. Dongfang Turbine, 2010(1): 21-25.
6	唐伟坤. 超声膜厚测量机理及传感器研究[D]. 南京: 南京航空航天大学, 2011.
	TANG Weikun. Research on the mechanism for ultrasonicmeasurement of film thickness and designing sensor[D]. Nanjing: Nanjing University of Aeronautics and Astronautics, 2011.
7	STAHL P, VON ROHR P R. On the accuracy of void fraction measurements by single-beam gamma-densitometry for gas-liquid two-phase flows in pipes[J]. Experimental Thermal and Fluid Science, 2004, 28(6): 533-544.
8	LILLELEHT L U, HANRATTY T J. Measurement of interfacial structure for co-current air-water flow[J]. Journal of Fluid Mechanics, 1961, 11(1): 65-81.
9	HURLBURT E, NEWELL T. Optical measurement of liquid film thickness and wave velocity in liquid film flows[J]. Experiments in Fluids, 1996, 21(5): 357-362.
10	KEELEY A, WATERS N, CUMMINS P, et al. Draining thin films—Part 2. Laser measurements of film thickness and velocity profile[J]. Journal of Non-newtonian Fluid Mechanics, 1989, 32(1): 79-94.
11	DUPONT J, MIGNOT G, PRASSER H M. Two-dimensional mapping of falling water film thickness with near-infrared attenuation[J]. Experiments in Fluids, 2015, 56(5): 1-16.
12	BRISSINGER D, PARENT G, BOULET P. Experimental study on radiation attenuation by a water film[J]. Journal of Quantitative Spectroscopy & Radiative Transfer, 2014, 145: 160-168.
13	KABARDIN I, MELEDIN V, ELISEEV I, et al. Optical measurement of instantaneous liquid film thickness based on total internal reflection[J]. Journal of Engineering Thermophysics, 2011, 20: 407-415.
14	SHEDD T A, NEWELL T. Automated optical liquid film thickness measurement method[J]. Review of Scientific Instruments, 1998, 69(12): 4205-4213.
15	CHATTERJEE S, BHARDWAJ R. A short review on optical interferometry techniques for characterization of a thin liquid film on a solid surface[J]. Sadhana Academy Proceedings in Engineering Sciences, 2023, 48(1): 30.
16	葛锦蔓. 干涉法测量膜厚方法及干涉图处理技术研究[D]. 西安: 西安工业大学, 2011.
	GE Jinman. Thin film thickness measurement and processing technology of interferogram based on interferometry[D]. Xi’an: Xi’an Technological University, 2011.
17	OHYAMA T, ENDOH K I, MIKAMI A, et al. Optical interferometry for measuring instantaneous thickness of transparent solid and liquid films[J]. Review of Scientific Instruments, 1988, 59(9): 2018-2022.
18	SHANG W, CHEN J. A partial coherent interferometry for measuring the thickness of a dynamic liquid sheet[J]. International Journal of Multiphase Flow, 2019, 116: 15-25.
19	蒋礼, 罗少轩, 阳艳, 等. 用迈克尔逊干涉仪测量全息干板膜厚度[J]. 应用光学, 2006(3): 250-253.
	JIANG Li, LUO Shaoxuan, YANG Yan, et al. Measurement of holographic film thickness using Michelson interferometer[J]. Journal of Applied Optics, 2006(3): 250-253.
20	马成, 徐磊. 改进的迈克尔逊干涉仪测量薄膜厚度[J]. 光学仪器, 2012, 34(1): 85-90.
	MA Cheng, XU Lei. Film thickness measurement by improved Michelson’s interferometer[J]. Optical Instruments, 2012, 34(1): 85-90.
21	BORGETTO N, ANDRE F, GALIZZI C, et al. Simultaneous film thickness measurement and wall temperature assessment by low-coherence interferometry[J]. Experimental Thermal and Fluid Science, 2013, 44: 512-519.
22	JIN J, MAENG S, PARK J, et al. Fizeau-type interferometric probe to measure geometrical thickness of silicon wafers[J]. Optics Express, 2014, 22(19): 23427-23432.
23	THOKALE R N, PATIL P S, DONGARE M B. Double-exposure holographic interferometry technique used for characterization of electrodeposited cobalt oxide thin films[J]. Materials Chemistry and Physics, 2002, 74(2): 143-149.
24	彭石军, 苗二龙, 史振广, 等. 高精度曲率半径测量研究[J]. 激光与光电子学进展, 2014, 51(1): 105-111.
	PENG Shijun, MIAO Erlong, SHI Zhenguang, et al. Research on high-precision measurement of curvature radius[J]. Laser & Optoelectronics Progress, 2014, 51(1): 105-111.
25	羡一民, 王科峰. 激光干涉仪技术及发展[J]. 工具技术, 2003(11): 68-74.
	XIAN Yimin, WANG Kefeng. Technology and development of laser interferometer[J]. Tool Technology, 2003(11): 68-74.
26	陈恩惠, 杨锦鸿, 李栋, 等. 软物质中的理性连续介质力学基础[J]. 物理学报, 2016, 65(18): 84-105.
	CHEN Enhui, YANG Jinhong, LI Dong, et al. Basis of rational continuum mechanics in soft matter[J]. Acta Physica Sinica, 2016, 65(18): 84-105.
27	孙晓昊. 软材料的大变形、接触和粘附等非线性问题的数值模拟研究[D]. 合肥: 中国科学技术大学, 2019.
	SUN Xiaohao. Numerical study on nonlinear mechanics of large deformation, contact and adhesion of soft materials[D]. Hefei: University of Science and Technology of China, 2019.
28	吕伟. 横向大剪切量干涉技术及其在物理量检测中的应用[D]. 武汉: 华中科技大学, 2011.
	Wei LYU. Large lateral shearing interferomtery technology and its applications in physical measurement[D]. Wuhan: Huazhong University of Science and Technology, 2011.
29	LYU W, ZHOU H C, LOU C, et al. Spatial and temporal film thickness measurement of a soap bubble based on large lateral shearing displacement interferometry[J]. Applied Optics, 2012, 51(36): 8863-8872.
30	朱进容. 水平圆管自然对流换热的剪切干涉测温数值和实验研究[D]. 武汉: 华中科技大学, 2011.
	ZHU Jinrong. Numerical and experimental study of shear interferometic temperature measurement for natural convection heat transfer about horizontal cylinders[D]. Wuhan: Huazhong University of Science and Technology, 2011.
31	MYSELS K J, SHINODA K, FRANKEL S. Soap films:studies of their thinning and a bibliography[M]. London: Pergamon Press, 1959.

因式项	系数	因式项	系数
x³	3.2×10^-9	xy	-4.5×10^-5
x²y	3.2×10^-8	y²	-1.3×10^-9
xy²	-5.0×10^-9	x	1.7×10^-2
y³	-5.0×10^-8	y	3.0×10^-2
x²	-5.6×10^-5	c	2.8

因式项	系数	因式项	系数
x³	3.2×10^-9	xy	-4.5×10^-5
x²y	3.2×10^-8	y²	-1.3×10^-9
xy²	-5.0×10^-9	x	1.7×10^-2
y³	-5.0×10^-8	y	3.0×10^-2
x²	-5.6×10^-5	c	2.8

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