部分融化冰晶撞击表面临界破碎速度实验

doi:10.7527/S1000-6893.2025.31558

Abstract

Abstract:

The problem of ice crystal icing seriously affects the flight safety of aircraft， and the impact behavior of partially melted ice particles is the key to the study of engine icing. A high-speed impact test rig for partially melted ice particles was designed and constructed， and a heat transfer based ice crystal melting rate measurement method was used and calibrated. Partially melted ice particle impact experiments were conducted at different diameters， impact velocities， and melting rates， and the effect of liquid water on critical fragmentation was discussed in terms of the ice particle fragmentation model. Further， a relative water film thickness coefficient θ is defined to scale the effect of the presence of liquid water on the impact fragmentation of partially melted ice crystals， and an experimental correlation equation for the critical fragmentation velocity of partially melted ice crystals is obtained based on the experimental data. This study improved the understanding of the impact crushing mechanism of partially melted ice particles， and provided a certain theoretical basis for the impact model and the adhesion model of partially melted ice crystals.

Key words: ice crystal icing, ice crystal melting, ice particle impact, impact behavior, melting rate measurement

CLC Number:

Zonghui LIU, Xueqin BU, Jiayi BAO, Guiping LIN. Experiment on critical fragmentation velocity of partially melted ice particles impacting a rigid surface[J]. Acta Aeronautica et Astronautica Sinica, 2025, 46(14): 131558.

Figures/Tables 13

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Table 1

Experiment parameters

实验组	1	2	3	4	5
融化率 $m r$ /%	0	20	40	60	80
冰核直径 $d i c e$ /mm	0.43~2.31	0.88~1.50	0.87~1.29	0.81~1.17	0.66~0.91
撞击速度v₀/（m·s^-1）	1.2~65.4	4.0~16.9	4.8~16.9	8.2~20.6	11.2~25.8

Table 1

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References 31

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Experiment on critical fragmentation velocity of partially melted ice particles impacting a rigid surface

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[1]	Xueqin BU, Ping HUANG, Guiping LIN, Yanxia LOU. Multi⁃step method for numerical simulation of ice crystal icing [J]. Acta Aeronautica et Astronautica Sinica, 2024, 45(14): 129308-129308.
[2]	Zhen WEI, Xiufang LIU, Fuhao ZHONG, Jiajun CHEN, Qingshuo MIAO, Yu HOU. Visual experimental investigation on melting characteristics of minuscule ice crystal particles [J]. Acta Aeronautica et Astronautica Sinica, 2023, 44(S2): 729301-729301.
[3]	HU Jianping, LIU Zhenxia, ZHANGL Lifen. Supercooled Large Droplet Impact Behaviors on an Aero-engine Strut [J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(10): 1778-1785.