期刊
OPTIK
卷 261, 期 -, 页码 -出版社
ELSEVIER GMBH
DOI: 10.1016/j.ijleo.2022.169180
关键词
Flame imaging; Tomography; Camera calibration; Speedup; Flame imaging; Tomography; Camera calibration; Speedup
类别
资金
- National Natural Science Foundation of China [91741108, 51876179]
- National Science and Technology Major Project of China [J2019-I-0003-0004]
This study aims to address two critical issues in 4D tomographic measurements: the accuracy of multi-camera calibration and the processing time of the tomographic program. A new multi-camera calibration method and a parallel tomographic reconstruction program have been developed, improving both accuracy and processing speed.
4D imaging measurements in turbulent flames have been long desired to better understand the complex phenomena involved in the combustion process. Such 4D measurements provide the information of turbulent flames in all three spatial coordinates and time sequences. Tomographic reconstruction has been recently demonstrated as a promising approach for 4D flame diagnostics. However, two critical issues remain in the current 4D tomographic measurements: the accuracy of multi-camera calibration and the processing time of the tomographic program. Therefore, this work aims to address the two issues by developing a new multi-camera calibration method and a parallel tomographic reconstruction program. As shown in this work, the new multi-camera calibration method can significantly improve the angle calibration accuracy; and the parallel program reduces the processing time for 1000 tomographic reconstructions from 10 days to similar to 12 h. Such enhanced accuracy and processing speed are expected to benefit a range of combustion researches, and a specific example is demonstrated involving 4D imaging of a subsonic diffusion flame.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据