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research-article

Application of Landweber Method for 3D Temperature Field Reconstruction Based on the Light-Field Imaging Technique

[+] Author and Article Information
Xing Huang

Harbin Institute of Technology, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China, 150001
917881244@qq.com

Hong Qi

Harbin Institute of Technology, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China, 150001
qihong@hit.edu.cn

Xiao-luo Zhang

Harbin Institute of Technology, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China, 150001
641904450@qq.com

Yatao Ren

Harbin Institute of Technology, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China, 150001
ren_ya_tao1990@163.com

LiMing Ruan

Harbin Institute of Technology, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China, 150001
ruanlm@hit.edu.cn

He-Ping Tan

Harbin Institute of Technology, School of Energy Science and Engineering, Harbin Institute of Technology, Harbin, P. R. China, 150001
tanheping@hit.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4039305 History: Received August 05, 2017; Revised December 19, 2017

Abstract

Combined with the light-field imaging technique, the Landweber method is applied to the reconstruction of three-dimensional temperature distribution in absorbing media theoretically and experimentally. In the theoretical research, simulated exit radiation intensities on the boundary of absorbing media according to the computing model of light field are employed as inputs for inverse analysis. Compared with the commonly used iterative methods, i.e., the least-square QR decomposition method and algebraic reconstruction technique, the Landweber method can produce reconstruction results with better quality and less computational time. Based on the numerical study, an experimental investigation is conducted to validate the suitability of the proposed method. The temperature distribution of the ethylene diffusion flame is reconstructed by using the Landweber method from the flame image captured by a light-field camera. Good agreement was found between the reconstructed temperature distribution and the measured temperature data obtained by a thermocouple. All the experimental results demonstrate that the temperature distribution of ethylene flame can be reconstructed reasonably by using the Landweber method combined with the light-field imaging technique, which is proven to have potential for use in non-contract measurement of temperature distribution in practical engineering applications.

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