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基于米氏散射理论和消光法的喷气燃料固体颗粒测量。

Solid Particle Swarm Measurement in Jet Fuel Based on Mie Scattering Theory and Extinction Method.

机构信息

Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.

University of Chinese Academy of Sciences, Beijing 100049, China.

出版信息

Sensors (Basel). 2023 Mar 5;23(5):2837. doi: 10.3390/s23052837.

DOI:10.3390/s23052837
PMID:36905040
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10007526/
Abstract

To overcome the disadvantages of small and random samples in static detection, this paper presents a study on dynamic measurements of solid particles in jet fuel using large samples. In this paper, the Mie scattering theory and Lambert-Beer law are used to analyze the scattering characteristics of copper particles in jet fuel. We have presented a prototype for multi-angle scattered and transmitted light intensity measurements of particle swarms in jet fuel which is used to test the scattering characteristics of the jet fuel mixture with 0.5-10 μm particle sizes and 0-1 mg/L concentrations of copper particles. The vortex flow rate was converted to an equivalent pipe flow rate using the equivalent flow method. Tests were conducted at equivalent flow rates of 187, 250 and 310 L/min. Through numerical calculations and experiments, it has been discovered that the intensity of the scattering signal decreases as the scattering angle increases. Meanwhile, both the scattered light intensity and transmitted light intensity would vary with the particle size and mass concentration. Finally, the relationship equation between light intensity and particle parameters has also been summarized in the prototype based on the experimental results, which proves its detection capability.

摘要

为了克服静态检测中小样本和随机样本的缺点，本文提出了一种使用大样本对射流燃料中固体颗粒进行动态测量的研究。本文利用米氏散射理论和朗伯-比尔定律分析了铜颗粒在射流燃料中的散射特性。我们提出了一种用于测量射流燃料中粒子群的多角度散射和透射光强的原型，用于测试粒径为 0.5-10μm，铜颗粒浓度为 0-1mg/L 的射流燃料混合物的散射特性。涡旋流量通过等效流量法转换为等效管流量。在等效流量为 187、250 和 310 L/min 的情况下进行了测试。通过数值计算和实验，发现散射信号强度随散射角的增加而减小。同时，散射光强度和透射光强度都会随颗粒尺寸和质量浓度而变化。最后，根据实验结果，原型中还总结了光强与颗粒参数之间的关系式，证明了其检测能力。

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