[1] Lu X B[D]. Research on heat and flow characteristic of falling film evaporation of refrigerant on vertical tube, 1-6(2020).

[2] Lü K P, Liu Z Y, Yang X et al. Numerical research on microchannel cooling structure of high power solid-state lasers[J]. Chinese Journal of Lasers, 47, 0601010(2020).

[3] Jiang L, Liu J, Yuan X R et al. Cooling techniques for deformation reduction of thin-disk lasers[J]. Chinese Journal of Lasers, 48, 0301001(2021).

[4] Lee S, Mudawar I. Investigation of flow boiling in large micro-channel heat exchangers in a refrigeration loop for space applications[J]. International Journal of Heat and Mass Transfer, 97, 110-129(2016).

[5] Tian H, Cheng B, Ma Y T et al. Research on falling film evaporation on horizontal tubes of refrigeration and air-conditioning system[J]. Refrigeration and Air-Conditioning, 11, 103-110(2011).

[6] Zhao C Y, Ji W T, Jin P H et al. Effect of downward vapor stream on falling film evaporation of R134a in a tube bundle[J]. International Journal of Refrigeration, 89, 112-121(2018).

[7] Sun S P[D]. Research on spray cooling system for electronics with high heat flux, 1-13(2010).

[8] Lin S, Liu X, Li X L. The spatial distribution of liquid film thickness outside the horizontal falling film tube[J]. International Journal of Heat and Mass Transfer, 143, 118577(2019).

[9] Zhang X, Li P X, Dong X Y et al. Parameter design and thermal effect numerical simulation of 10 kW fiber connector[J]. Laser & Optoelectronics Progress, 58, 0114009(2021).

[10] Li W, Lyu D, Zhang J Z et al. Condensation heat transfer and flow properties of R134a refrigerant in rectangular minichannel: a numerical study[J]. Journal of Thermal Science and Engineering Applications, 12, 021006(2020).

[11] Jiang C, Chen Z Q. Numerical simulation of fluid flow and heat transfer characteristicsof falling film evaporation outside horizontal tubes[J]. CIESC Journal, 69, 4224-4230(2018).

[12] Sripattrapan W, Wongchang T, Wongwises S. Heat transfer and two-phase flow characteristics of refrigerants flowing under varied heat flux in a double-pipe evaporator[J]. Heat and Mass Transfer, 40, 653-664(2004).

[13] Wang Y C, Chen J Y, Xu L et al. Permittivity-based liquid film sensor for cryogenic fluid[J]. Journal of Zhejiang University (Engineering Science), 50, 1855-1858(2016).

[14] Wang R L, Lee B A, Lee J S et al. Analytical estimation of liquid film thickness in two-phase annular flow using electrical resistance measurement[J]. Applied Mathematical Modelling, 36, 2833-2840(2012).

[15] Yu Y X, Ma L, Ye H Y et al. Design of instantaneous liquid film thickness measurement system for conductive or non-conductive fluid with high viscosity[J]. AIP Advances, 7, 065207(2017).

[16] Wang M, Zheng D D, Xu Y. A new method for liquid film thickness measurement based onultrasonic echo resonance technique in gas-liquid flow[J]. Measurement, 146, 447-457(2019).

[17] Zhang K, Dou P, Wu T H et al. An ultrasonic measurement method for full range of oil film thickness[J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 233, 481-489(2019).

[18] Yang H N, Guo X L, Su M X et al. Liquid-water film-thickness online measurement in a flow channel by TDLAS[J]. Chinese Journal of Lasers, 41, 1208010(2014).

[19] de Oliveira F S, Yanagihara J I, Pacífico A L. Film thickness and wave velocity measurement using reflected laser intensity[J]. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 28, 30-36(2006).

[20] Youn Y J, Han Y, Shikazono N. Liquid film thicknesses of oscillating slug flows in a capillary tube[J]. International Journal of Heat and Mass Transfer, 124, 543-551(2018).

[21] Ye X, Hao T T, Chen Y S et al. Liquid film transport around Taylor bubble in a microchannel with gas cavities[J]. Chemical Engineering and Processing-Process Intensification, 148, 107828(2020).

[22] Klausner J F, Zeng L Z, Bernhard D M. Development of a film thickness probe using capacitance for asymmetrical two-phase flow with heat addition[J]. Review of Scientific Instruments, 63, 3147-3152(1992).

[23] Vergne P, Fillot N, Bouscharain N et al. An experimental and modeling assessment of the HCFC-R123 refrigerant capabilities for lubricating rolling EHD circular contacts[J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 229, 950-961(2015).

[24] Martínez-Galván E, Ramos J C, Antón R et al. Film thickness and heat transfer measurements in a spray cooling system with R134a[J]. Journal of Electronic Packaging, 133, 011002(2011).

[25] Ko J W, Jeon D S, Kim Y L et al. Experimental study on film condensation heat transfer characteristics of R1234ze(E) and R1233zd(E) over horizontal plain tubes[J]. Journal of Mechanical Science and Technology, 32, 527-534(2018).