中国物理B ›› 2018, Vol. 27 ›› Issue (5): 54401-054401.doi: 10.1088/1674-1056/27/5/054401

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Reconstruction model for temperature and concentration profiles of soot and metal-oxide nanoparticles in a nanofluid fuel flame by using a CCD camera

Guannan Liu(刘冠楠), Dong Liu(刘冬)   

  1. 1 MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 Advanced Combustion Laboratory, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • 收稿日期:2017-10-09 修回日期:2017-12-28 出版日期:2018-05-05 发布日期:2018-05-05
  • 通讯作者: Dong Liu E-mail:dongliu@njust.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No.51576100) and the Project of "Six Talent Summit" of Jiangsu Province,China (Grant No.2014-XNY-002).

Reconstruction model for temperature and concentration profiles of soot and metal-oxide nanoparticles in a nanofluid fuel flame by using a CCD camera

Guannan Liu(刘冠楠)1,2, Dong Liu(刘冬)1,2   

  1. 1 MIIT Key Laboratory of Thermal Control of Electronic Equipment, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China;
    2 Advanced Combustion Laboratory, School of Energy and Power Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2017-10-09 Revised:2017-12-28 Online:2018-05-05 Published:2018-05-05
  • Contact: Dong Liu E-mail:dongliu@njust.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No.51576100) and the Project of "Six Talent Summit" of Jiangsu Province,China (Grant No.2014-XNY-002).

摘要:

This paper presents a numerical study on the simultaneous reconstruction of temperature and volume fraction fields of soot and metal-oxide nanoparticles in an axisymmetric nanofluid fuel sooting flame based on the radiative energy images captured by a charge-coupled device (CCD) camera. The least squares QR decomposition method was introduced to deal with the reconstruction inverse problem. The effects of ray numbers and measurement errors on the reconstruction accuracy were investigated. It was found that the reconstruction accuracies for volume fraction fields of soot and metal-oxide nanoparticles were easily affected by the measurement errors for radiation intensity, whereas only the metal-oxide volume fraction field reconstruction was more sensitive to the measurement error for the volume fraction ratio of metal-oxide nanoparticles to soot. The results show that the temperature, soot volume fraction, and metal-oxide nanoparticles volume fraction fields can be simultaneously and accurately retrieved for exact and noisy data using a single CCD camera.

关键词: simultaneous reconstruction, temperature distribution, soot and metal-oxide volume fraction, nanofluid fuel flame

Abstract:

This paper presents a numerical study on the simultaneous reconstruction of temperature and volume fraction fields of soot and metal-oxide nanoparticles in an axisymmetric nanofluid fuel sooting flame based on the radiative energy images captured by a charge-coupled device (CCD) camera. The least squares QR decomposition method was introduced to deal with the reconstruction inverse problem. The effects of ray numbers and measurement errors on the reconstruction accuracy were investigated. It was found that the reconstruction accuracies for volume fraction fields of soot and metal-oxide nanoparticles were easily affected by the measurement errors for radiation intensity, whereas only the metal-oxide volume fraction field reconstruction was more sensitive to the measurement error for the volume fraction ratio of metal-oxide nanoparticles to soot. The results show that the temperature, soot volume fraction, and metal-oxide nanoparticles volume fraction fields can be simultaneously and accurately retrieved for exact and noisy data using a single CCD camera.

Key words: simultaneous reconstruction, temperature distribution, soot and metal-oxide volume fraction, nanofluid fuel flame

中图分类号:  (Thermal radiation)

  • 44.40.+a
44.05.+e (Analytical and numerical techniques) 02.30.Zz (Inverse problems)