北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (11): 2193-2198.doi: 10.13700/j.bh.1001-5965.2017.0054

• 先进测量手段 • 上一篇    下一篇

基于时域信息的粒径分布及光学常数重建

任亚涛, 齐宏, 张晓罗, 阮立明   

  1. 哈尔滨工业大学 能源科学与工程学院, 哈尔滨 150001
  • 收稿日期:2017-02-13 修回日期:2017-06-30 出版日期:2017-11-20 发布日期:2017-09-18
  • 通讯作者: 齐宏 E-mail:qihong@hit.edu.cn
  • 作者简介:任亚涛,男,博士研究生。主要研究方向:辐射传输逆问题及智能优化算法;齐宏,男,博士,教授,博士生导师。主要研究方向:热辐射传输与耦合换热、高温弥散颗粒辐射物性及温度测量、辐射传输逆问题及智能优化算法、微藻新能源利用。
  • 基金资助:
    国家自然科学基金(51576053);哈尔滨市科技创新人才研究专项基金(2014RFQXJ047)

Reconstruction of particle size distribution and optical constant based on time-resolved information

REN Yatao, QI Hong, ZHANG Xiaoluo, RUAN Liming   

  1. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2017-02-13 Revised:2017-06-30 Online:2017-11-20 Published:2017-09-18
  • Supported by:
    National Natural Science Foundation of China (51576053); Harbin Special Fund for Scientific and Technological Innovation Talents (2014RFQXJ047)

摘要: 准确地测量颗粒系粒径分布与光学常数对于准确地预测相关介质内的辐射传输过程具有重要意义。采用一种改进的烟花算法同时反演了颗粒系粒径分布与光学常数。通过测量不同波长的激光辐照下,一维颗粒系的不同角度的时域透射信号,并结合改进的烟花算法对其光学常数以及粒径分布进行反演。通过对3种常见的粒径分布函数进行测试发现,使用本文提出的改进的烟花算法结合相应的物性测量方法可以准确得到颗粒系粒径分布与光学常数。

关键词: 烟花算法, 粒径分布, 光学常数, 反问题, 时域辐射传输

Abstract: The accurate measurement of particle size distribution and optical constant is of great importance for the prediction of radiative transfer in participating media. In the present work, an improved firework algorithm was applied to estimate the particle size distribution and optical constant simultaneously. At different angles, the time-resolved transmittance of a one-dimensional slab irradiated by laser of different wavelengths was measured. Afterward, the particle size distribution and optical constant were retrieved using the improved firework algorithm. According to the test cases for three different types of particle size distribution functions, it can be concluded that the particle size distribution and optical constant can be retrieved accurately by the proposed improved firework algorithm with assistant of corresponding physical property measurement technique.

Key words: firework algorithm, particle size distribution, optical constant, inverse problem, time-resolved radiative transfer

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