多波长合成孔径彩虹折射仪

王鑫昊; 吴迎春; 徐东炎; 吴学成

doi:10.11729/syltlx20230026

多波长合成孔径彩虹折射仪

doi: 10.11729/syltlx20230026

王鑫昊^{1, 2,},
吴迎春^{1, 2, ,},
徐东炎¹,
吴学成¹

1.
浙江大学能源工程学院能源清洁利用国家重点实验室，杭州　310027
2.
浙江大学湖州研究院，湖州　650500

基金项目: 国家自然科学基金项目（52006193，52276166）

详细信息

作者简介:
王鑫昊：（1997—），男，满族，辽宁鞍山人，博士研究生。研究方向：结冰测量仪器与试验，彩虹折射测量技术，液滴测量技术。通信地址：浙江省杭州市西湖区浙大路38号浙江大学玉泉校区能源工程学院能源清洁利用国家重点实验室（310027）。E-mail：xinhaowang@zju.edu.cn

通讯作者:
E-mail：wuyingchun@zju.edu.cn

中图分类号: TH74；TK311
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- 文章访问数: 125
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- 被引次数: 0
出版历程
- 收稿日期: 2023-03-06
- 修回日期: 2023-06-12
- 录用日期: 2023-07-18
- 网络出版日期: 2023-08-31
- 刊出日期: 2023-10-30

Multi-wavelength synthetic aperture rainbow refractometer

WANG Xinhao^{1, 2
,},
WU Yingchun^{1, 2
, ,},
XU Dongyan¹,
WU Xuecheng¹

1.
State Key Laboratory of Clean Energy Utilization, College of Energy Engineering, Zhejiang University, Hangzhou　310027, China
2.
Huzhou Institution of Zhejiang University, Huzhou　650500, China

摘要

摘要: 随着大规模、大尺度试验环境需求的持续增加，测量仪器的应用范围不断扩大。彩虹折射测量技术是一种高效的云雾颗粒测量技术，受成像系统孔径的限制，其测量距离一般在50 cm以下。而合成孔径彩虹折射测量技术利用多个波长的激光照射单个液滴产生多个彩虹信号，并将多个彩虹信号合成为一个信号，经反演得到液滴参数，可以实现超远距离液滴参数测量，将测量距离增大至1.5 m左右。为满足从大型喷雾场外部测量内部液滴参数的需求，研发了多波长合成孔径彩虹折射仪。通过模拟，验证了多波长合成孔径彩虹折射仪能够实现远距离液滴测量；通过测量不同粒径的水滴和乙醇液滴，证明了多波长合成孔径彩虹折射仪运行的可行性和准确性。粒径和折射率测量误差分别在5 μm和8 × 10⁻⁴以内（水滴和乙醇液滴粒径范围为100 ～ 200 μm）。多波长合成孔径彩虹折射仪可以突破孔径限制，拓展工业应用场景，实现液滴粒径、折射率等多参数同时在线测量。
- 液滴 /
- 粒径 /
- 多波长 /
- 折射率 /
- 彩虹折射仪 /
- 合成孔径
Abstract: Against the increasing requirement of large-scale conditions, there is more demand of the measurement instruments. As an efficient approach of measuring cloud droplets, the measurement distance of the rainbow refractometry is generally less than 50 cm owing to the limitation of the aperture of the imaging system. The synthetic aperture rainbow refractometry is proposed to achieve long distance droplet measurement. Laser beams of multiple wavelengths are used to irradiate droplets and multiple rainbow signals are generated. The multiple rainbow signals are collected and combined into one signal and then inversed to obtain the droplet parameters. In this way, the measurement distance of the rainbow refractometry is increased to around 1.5 m, which breaks the aperture limit of the rainbow refractometry and enlarges its applicability. Based on this technique, the multi-wavelength synthetic aperture rainbow refractometer is developed and suitable for parameter measurement of droplets in the central region of large-scale facilities with instruments located outside. The synthetic aperture rainbow refractometry is verified to achieve long distance droplet measurement. The feasibility and accuracy of the multi-wavelength synthetic aperture rainbow refractometer were proved through experimental tests of water and ethanol droplets with different sizes and refractive indices. The sizes of water and ethanol droplets were within the range from 100 to 200 μm. The droplet size and refractive index uncertainties were within 5 μm and 8 × 10⁻⁴, respectively. Therefore, the multi-wavelength synthetic aperture rainbow refractometer is no longer limited by the aperture size and can be applied to larger industrial scenarios, achieving the multi-parameters droplet measurement of size, refractive index, and so on.
- droplet /
- size /
- multi-wavelength /
- refractive index /
- rainbow refractometer /
- synthetic aperture

HTML全文

图 1 双波长合成孔径彩虹折射测量系统光路图

Figure 1. The optical path of multi-wavelength synthetic aperture rainbow refractometry

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图 2 合成孔径彩虹信号及拟合曲线

Figure 2. The signal and fitting curves of synthetic aperture rainbow refractometry

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图 3 模拟验证的预设与反演结果对比

Figure 3. The comparison of results from simulation and inversion

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图 4 多波长合成孔径彩虹折射仪

Figure 4. Multi-wavelength synthetic aperture rainbow refractometer

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图 5 多波长合成孔径彩虹折射仪试验图片及处理

Figure 5. The image and process of multi-wavelength synthetic aperture rainbow refractometer

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图 6 多波长合成孔径彩虹折射仪测量结果

Figure 6. The measuring result of multi-wavelength synthetic aperture rainbow refractometer

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