毕业设计说明书中文摘要在工业生产、国防建设和大气污染等各个领域，准确测量颗粒粒径已不容忽视，这对于改善产品质量、降低能源消耗、控制环境污染等有着巨大的经济和社会效益。本文基于Mie散射理论，在几何光学近似下，推导出了微小液滴半径和其侧向散射光强之间的关系式。在实验中，由于设备限制，采用玻璃珠代替微小液滴进行实验，在不同侧向散射角，测量不同粒径下的侧向散射光强，并对实验数据进行了分析。结果表明：液滴半径和其侧向散射光强之间存在明显的二次函数关系，且拟合系数大于0。99。该结果为进一步研究利用光的侧向散射效应测量液滴半径的装置奠定了一定的基础。81414

毕业论文关键词：侧向散射 光强 液滴半径 几何近似

毕业设计说明书外文摘要

Title    Research on measurements of tiny droplet radius based on the lateral scattering effect of light           

Abstract In the fields of industrial production, national defense and air pollution, accurate measurement of particle size has a great importance, which has a significant economic and social benefits to improve product quality, reduce energy consumption and control of environmental pollution。On the basis of Mie scattering theory in this paper,we derived the relationship between tiny droplet radius and the lateral scattering intensity under the Whole geometric approximation method, (WGAM)。Because of equipment limitations,glass beads instead of tiny drops were used for measurements in the experiential study。The lateral scattering intensities were measured under different droplet diameters from different lateral scattering angles。 The experimental data were analyzed and the results showed that the quadratic function relationship between the droplet radius and the lateral scattering light intensity was obvious, and the fitting coefficient was more than 0。99。The results lay a foundation for further study of measuring the droplet radius by utilizing the lateral scattering effect of light。

Keywords：lateral scattering; light intensity; droplet radius; geometric approximation

目   次

1  绪论 1

1。1  研究背景及意义 1

1。2  粒径测量技术的发展现状 1

1。3  本文的主要内容 4

2  理论基础 5

2。1  光的散射 5

2。2  米氏理论及其近似 5

2。3  基于米氏理论的光散射法 6

2。4  全几何光学近似 7

3  实验 13

3。1  理想实验设计 13

3。2  实验近似说明 13

3。3  实际实验设计 15

4  实验数据处理 20

4。1  实验数据与曲线拟合 20

4。2  实验数据仿真 22

4。3  实验数据分析 24

5  误差分析 26

结  论 27

致  谢 28

参 考 文 献 29