Icing kinetics and mechanism of droplet impinging on supercooled corrugated plates with different curvature

被引：0
|
作者：
Zhou X. [1 ]
Li C. [1 ]
Yang G. [1 ]
Cai A. [1 ]
Wu J. [1 ]
机构：
[1] School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai
来源：
Huagong Xuebao/CIESC Journal | 2023年 / 74卷
关键词：
curvature; droplet impinging; freezing phase interface; various Weber number;
D O I：
10.11949/0438-1157.20221591
中图分类号：
学科分类号：
摘要：
CLSVOF method and enthalpy-porosity method were coupled to carry out a parametric analysis on icing behaviors of single droplet impinging on supercooled corrugated plates with different curvature and various Weber number. The inner mechanism of differences among kinetic behaviors of droplet contraction, oscillation and fragmentation during droplet impaction was focused on, considering two substrates: single-row corrugated plate and double-row corrugated plate with different curvature. The influence law of supercooling and impingement on freezing interface evolution rate was explored. Simulation results showing: droplet impact icing dynamics was the results coupled of fluid disorder characteristics and time-varying characteristics of heat transfer boundary. The Rayleigh-Taylor instability appears in the droplet spreading leading edge can accelerate droplet freezing during high velocity impaction, interfacial energy transformation caused by droplet breakage can bring up freezing rate decrease. Increasing of supercooling can lead to liquid film fracture obstruction and reduction of droplet circumferential capillary climbing area. Results can supply theoretical reference for microscopic droplet capillarity icing dynamics and its application to anti-icing engineering. © 2023 Chemical Industry Press. All rights reserved.
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页码：141 / 153
页数：12
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