有限空间竖直壁面的结冰特性

doi:10.7527/S1000-6893.2023.29294

Abstract

Abstract:

Based on the practical needs of engineering projects， this paper explores how to obtain different types of uniform and repeatable ice layers on the surface of vertical test object. Firstly， a set of spray icing experiment platform is built， including suitable air atomization nozzle and water and gas supply equipment， the cold storage that can provide sufficient cooling capacity， and various kinds of sensors with corresponding range to monitor the temperature， pressure and other parameters during the experiment. Then， the icing characteristics of nozzle spray are studied based on the platform. By adjusting the water and the gas inlet pressure of the nozzle to change the spray water flow rate and the spray particle size， and matching different ambient temperature， different icing types are obtained on the surface of the test object， and the experimental repeatability is verified for the corresponding working conditions. Finally， the icing effect required by the project is explored to provide support for the selection of project design and implementation scheme.

Key words: icing experiment, cloud simulation, icing type, air atomizing spray, smooth and flat glaze ice

CLC Number:

V211.4

Fangbei CHEN, Zheng DAI, Yi CUI, Jian WU. Icing characteristics of vertical test object in limited space[J]. Acta Aeronautica et Astronautica Sinica, 2023, 44(S2): 729294-729294.

Figures/Tables 14

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传感器类型	型号	测量范围	测量精度	生产厂家
压力传感器	CYYZ11	0~0.6 MPa	±0.1%FS	北京星仪
PT100热电阻型温度传感器	ALDSBW	-30~40 ℃	±0.3%FS	艾莱迪自动化
齿轮流量计（液体）	NK-GF4	5~250 L/h	±0.5%FS	上海錾科
气体质量流量计	AST10-DBM	0~100 NL/min	±0.2%FS	阿斯尔特仪表

喷雾工况	ALRI/（mm·h^-1）
P_a=0.4 MPa， P_w=0.25 MPa	11.22
P_a=0.4 MPa， P_w=0.3 MPa	24.61
P_a=0.25 MPa， P_w=0.2 MPa	31.69
P_a=0.4 MPa， P_w=0.35 MPa	50.52

工况	ALRI=11.22 mm/h	ALRI=24.61 mm/h	ALRI=31.69 mm/h	ALRI=50.52 mm/h
均值/（NL·min^-1）	47.82	42.89	27.43	37.31
标定值/（NL·min^-1）	46.3	41.5	26.8	36.3
偏差值/（NL·min^-1）	1.52	1.39	0.63	1.01
偏差百分比/%	3.28	3.35	2.35	2.78

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Icing characteristics of vertical test object in limited space

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