中国空间站燃烧科学实验系统PIV单元地面试验

何丽芳; 郑会龙; 王希坤; 杨肖芳; 张晓武

doi:10.11728/cjss2022.06.211123121

中国空间站燃烧科学实验系统PIV单元地面试验

doi: 10.11728/cjss2022.06.211123121

何丽芳^{1, 2,},
郑会龙^2, ,,
王希坤¹,
杨肖芳²,
张晓武²

1.
江苏大学流体机械工程技术研究中心　镇江　212013
2.
中国科学院工程热物理研究所　北京　100190

基金项目: 中国载人航天工程计划燃烧科学实验系统项目资助

详细信息

作者简介:
何丽芳：E-mail：helifang@iet.cn

通讯作者:
郑会龙，E-mail：zhenghuilong@iet.cn

中图分类号: V524
计量
- 文章访问数: 76
- HTML全文浏览量: 50
- PDF下载量: 24
- 被引次数: 0
出版历程
- 收稿日期: 2021-11-19
- 修回日期: 2022-04-26
- 网络出版日期: 2022-11-09

Ground Experiment Investigation of PIV Unit for Combustion Science Experimental System of China Space Station

1.
Research Center of Fluid Machinery Engineering and Technology, Jiangsu University, Zhenjiang 212013
2.
Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190

摘要

摘要: 中国空间站燃烧科学实验系统是用于开展微重力燃烧实验研究的综合性科学实验平台，可以实现燃烧流场测量。为了验证燃烧科学实验系统粒子图像测速(PIV)单元对燃烧流场测量的功能与可行性，本文基于与在轨状态一致的连续激光器和相机的空间布局，搭建了地面层流圆孔射流试验平台，选取Al₂O_3，TiO_2，ZrO₂三种示踪粒子进行冷态试验与热态试验。试验结果表明，自主研制Nd∶YVO₄泵浦连续激光器偏光角度合适，能照亮被测流场主流区域，燃烧科学实验系统PIV单元可用于低速燃烧流场测量；相同工况下，Al₂O₃粒子在冷态试验测量的速度值更接近于理论值，速度幅值比更接近1，更适用于低速流体测量。
- 燃烧科学实验系统 /
- PIV单元地面试验 /
- 冷态流场 /
- 热态流场
Abstract: The Combustion Science Experimental System of China Space Station is a comprehensive scientific platform for microgravity combustion experiment research, which is feasible for velocity measurement. In order to test the feasibility function of Particle Image Velocimetry (PIV), an experimental platform for laminar circular orifice jet, which has the same spatial layout of the laser and camera as that in-orbit operation, was built for reacting flow field and non-reacting flow field experiment. Al₂O₃, TiO₂ and ZrO₂ were selected as tracer particles. The experimental results indicate that the combustion science experimental system of PIV unit is feasible for low-speed combustion field measurement. Under the same conditions, the obtained velocities by using Al₂O₃ particles are closer to analytical values with velocity amplitude ratio nearest to 1, which suggests that Al₂O₃ particles are more suitable for low-speed field. The present study can provide the selection basis for particle species in ground-space comparison experiments.
- Combustion science experimental system /
- Ground experiment of PIV unit /
- Reacting flow field /
- Non-reacting flow field

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图 1 燃烧科学实验系统PIV单元

Figure 1. Combustion science experimental system of PIV unit

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图 2 试验系统

Figure 2. Schematic of experimental system

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图 3 三种示踪粒子在相同试验工况下的冷态射流

Figure 3. Three tracer particles under the same non-reacting condition

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图 4 三种示踪粒子的冷态速度矢量云图

Figure 4. Velocity vector plots of the three tracer particles under non-reacting flow field

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图 5 不同射流断面的速度分布与Al₂O₃粒子归一化速度分布

Figure 5. Velocity profiles at different jet sections and normalized velocity of Al₂O₃ particles

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图 6 三种示踪粒子沿射流中心轴上的速度分布

Figure 6. Velocity distributions of the three tracer particles along the central axis of the jet

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图 7 相同热态试验工况下的粒子信息场

Figure 7. Particle information field under the same reacting condition

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图 8 Al₂O₃粒子测量的热态流场

Figure 8. Velocity measured by Al₂O₃ particles

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表 1 激光流场诊断技术

Table 1. Laser diagnostic technology of flow field

测速方法	测量原理	测量特点	不足
粒子图像测速技术（PIV）	粒子示踪激光散射粒子成像互相关算法	特定波长激光激发粒子成像可见性多点瞬时流场	需添加示踪粒子
激光多普勒测速技术（LDV）	粒子示踪激光散射光电转换多普勒频移	单一频率激光激发分光、聚焦光路光信号收集与检测	需添加示踪粒子单点测量
激光诱导荧光技术（LIF）	分子示踪激光诱导荧光光谱比分法	紫外调谐激光激发多种组分	定性化测量荧光弱、时间短吸收波段窄
可调谐二极管激光吸收光谱技术（TDLAS）	分子示踪零吸收基线拟合多普勒频移	激光激发吸收中心频移分光、聚焦光路	空间分辨率低

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表 2 连续激光器与高速相机主要技术参数

Table 2. Main parameters of camera and laser

连续激光器		高速相机
激光器类型	Nd∶YVO₄	相机型号	PCO.DIMAX.CS1 (黑白版本)
尺寸/mm	211×190×344	尺寸/mm	85×85×102.5
质量/kg	7.9 (不含水冷)	质量/kg	0.985 (含C-mount)
激光功率/W	10	曝光时间/ms	0.0015~40
功率稳定性	小于3% (RMS)	像元尺寸/μm	11×11
波长/nm	532	图像拍摄速率/(frame·s^–1)	3086 (满分辨率1296 pixel×1024 pixel)
偏光角度/(°)	15	ISO灵敏度	1250~16000

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表 3 示踪粒子物理特性

Table 3. Physics properties of the three tracer particles used

粒子类型	粒径/μm	密度/(kg·m^–3)	熔点/℃	粒子响应时间(×10^–6)/s	密度比	相对折射指数
Al₂O₃	0.3~0.5	2100	2054	1.578	1627.9	1.765
TiO₂	0.3~0.5	3140	1840	2.362	2434.1	2.61
ZrO₂	0.3~0.5	7110	2700	5.349	5511.6	2.17

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