离心喷嘴低温燃油特性试验研究

唐锐; 闵明; 朱德勇

doi:10.13224/j.cnki.jasp.20250265

离心喷嘴低温燃油特性试验研究

doi: 10.13224/j.cnki.jasp.20250265

唐锐^{1, 2,},
闵明¹,
朱德勇^{1, 2}

1.
中国航发贵阳发动机设计研究所，贵阳 550081
2.
贵州省航空发动机转子结构完整性全省重点实验室，贵阳 550081

详细信息

作者简介:
唐锐（1995-），女，工程师，硕士，主要从事航空发动机燃烧室零部件试验与测试研究。E-mail：tangrui710@163.com

中图分类号: V231.2
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- 文章访问数: 53
- HTML浏览量: 32
- PDF量: 3
- 被引次数: 0
出版历程
- 收稿日期: 2025-06-04
- 网络出版日期: 2026-08-24

Experimental study on low-temperature fuel characteristics of pressure-swirl atomizer

Tang Rui^{1, 2
,},
Min Ming¹,
Zhu Deyong^{1, 2}

1.
Guiyang Engine Design and Research Institute，Aero Engine Corporation of China，Guiyang 550081，China
2.
Guizhou Provincial Key Laboratory of Aero Engine Rotor Structural Integrity，Guiyang 550081，China

摘要

摘要:
搭建喷嘴特性试验系统，研究不同燃油温度下RP-3和RP-5燃油对单油路离心喷嘴的质量流量特性、雾化锥角、索太尔平均直径（SMD）、液滴尺寸分布等性能的影响。结果表明：相同供油压力下，随着燃油温度从20 ℃降至−30 ℃，RP-3和RP-5燃油的密度、运动黏度和表面张力增大，喷嘴质量流量增加，各温度工况下RP-5燃油的质量流量比RP-3大2%～4%；雾化锥角减小，RP-3燃油雾化锥角减小14%，RP-5燃油雾化锥角减小23%；SMD增大，液滴尺寸分布指数先减小后增大，说明燃油温度降低导致了液滴的平均尺寸变大，但液滴尺寸的不均匀性有所减小，液滴尺寸分布变得更加集中。
- RP-3燃油 /
- RP-5燃油 /
- 质量流量特性 /
- 雾化特性 /
- 雾化锥角 /
- 索太尔平均直径
Abstract:
An experimental system was built to study the effects of RP-3 and RP-5 fuels at different fuel temperatures on the flow rate characteristics, cone angle, Sauter mean diameter (SMD) and droplet size distribution. The results showed that under the same fuel pressure, as the fuel temperature decreased from 20 ℃ to −30 ℃, the density, kinematic viscosity, and surface tension of RP-3 and RP-5 fuels increased, and the flow rate also increased. The flow rate of RP-5 fuel was 2% to 4% higher than that of RP-3; the cone angle decreased by 14% for RP-3 fuel and 23% for RP-5 fuel; as SMD increased, the droplet size distribution index first decreased and then increased, indicating that the decrease in fuel temperature led to an increase in the average droplet size, but the unevenness of droplet size decreased and the droplet size distribution became more concentrated.
- RP-3 fuel /
- RP-5 fuel /
- flow rate characteristics /
- atomization characteristics /
- atomization cone angle /
- Sauter mean diameter

HTML

图 1 离心喷嘴

Figure 1. Pressure-swirl atomizer

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图 2 试验系统示意图

Figure 2. Schematic diagram of experimental system

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图 3 采集路径示意图

Figure 3. Schematic diagram of collection path

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图 4 温度-质量流量特性

Figure 4. Temperature-mass flow characteristics

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图 5 不同温度下供油压力-质量流量特性及拟合曲线

Figure 5. Fuel pressure-mass flow characteristics and fitting curve at different temperatures

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图 6 雾化锥角

Figure 6. Atomization cone angle

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图 7 不同温度下的SMD

Figure 7. SMD at different temperatures

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图 8 沿半径方向的SMD

Figure 8. SMD along the radius direction

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图 9 液滴分布指数

Figure 9. Droplet distribution index

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表 1 燃油物性参数

Table 1. Physical properties of fuels

温度/℃	燃油物性	测量精度	RP-3	RP-5
20	密度/（kg/m³）	0.00005 g/cm³	779.6	815.9
	表面张力/（mN/m）	0.1%	22.8	23.7
	运动黏度/（mm²/s）	0.1%	2.1	2.2
0	密度/（kg/m³）	0.00005 g/cm³	792.7	827.8
	表面张力/（mN/m）	0.1%	24.8	25.7
	运动黏度/（mm²/s）	0.1%	3.2	3.5
−15	密度/（kg/m³）	0.00005 g/cm³	822.5	838.3
	表面张力/（mN/m）	0.1%	25.7	26.7
	运动黏度/（mm²/s）	0.1%	4.6	5.3
−30	密度/（kg/m³）	0.00005 g/cm³	833.2	854.1
	表面张力/（mN/m）	0.1%	26.9	27.9
	运动黏度/（mm²/s）	0.1%	6.7	9.0

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表 2 拟合函数

Table 2. Fitting function

燃油温度/℃	RP-3	RP-5
20	q_m=8.61Δp^0.47	q_m=8.78Δp^0.47
0	q_m =8.8Δp^0.47	q_m=8.99Δp^0.46
−15	q_m=9.01Δp^0.47	q_m=9.1Δp^0.46
−30	q_m=9.19Δp^0.45	q_m=9.43Δp^0.5

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