Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Time-resolved measurements of a swirl flame at 4 kHz via computed tomography of chemiluminescence

Not Accessible

Your library or personal account may give you access

Abstract

Computed tomography of a chemiluminescence (CTC) system was implemented to provide time-resolved 3D measurements of an unconfined turbulent swirl flame. This system was designed in a cost-effective manner and employed three customized view registration assemblies to simultaneously capture eight projections of the target flame at a repetition rate of 4 kHz. Both time-resolved and time-averaged tomographic reconstructions were performed based on data acquired for a duration of 250 ms. Both qualitative and quantitative validations suggested the correctness of our implementation. The time-resolved instantaneous reconstructions successfully captured the evolution of the structural features of the swirl flame such as local extinctions and the helical mode. Based on the reconstructions, the centroids of chemiluminescence for all the layers were calculated. The trajectory of these centroids provided insights into the flow motion and suggested a rotating helical structure of the swirl flame. These results demonstrated the feasibility of resolving the dynamics of turbulent swirl flames with a kHz temporal resolution using the relatively inexpensive CTC system.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
Instantaneous 3D imaging of highly turbulent flames using computed tomography of chemiluminescence

Khadijeh Mohri, Simon Görs, Jonathan Schöler, Andreas Rittler, Thomas Dreier, Christof Schulz, and Andreas Kempf
Appl. Opt. 56(26) 7385-7395 (2017)

Demonstration of 3D computed tomography of chemiluminescence with a restricted field of view

Hecong Liu, Tao Yu, Man Zhang, and Weiwei Cai
Appl. Opt. 56(25) 7107-7115 (2017)

Three-dimensional rapid flame chemiluminescence tomography via deep learning

Ying Jin, Wanqing Zhang, Yang Song, Xiangju Qu, Zhenhua Li, Yunjing Ji, and Anzhi He
Opt. Express 27(19) 27308-27334 (2019)

Supplementary Material (2)

NameDescription
Visualization 1       Evolution of projections on three cameras.
Visualization 2       200 consecutive reconstructions.

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (17)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (2)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved