Simultaneous imaging of CH*, C*2, and temperature in flames using a DSLR camera and structured illumination
Journal article, 2023

Measurement of chemical species and temperature mapping in flames is essential to understanding the combustion process. Multiple cameras are conventionally employed for measurement in such scenarios making the experi-mental setup not only cost-intensive but also challenging. To circumvent this, structured illumination (SI)-based methods are reported for multispecies chemiluminescence (CL) imaging using a single camera. In this paper, we demonstrate four-channel SI-based imaging for simultaneous snapshot CH* and C*2 CL imaging and two-color pyrometry for temperature profiles in a butane diffusion flame. We demonstrate our approach using individual species and multiple species imaging. Taking the advantage of the axisymmetric nature of the flame, the Abel trans-form is performed on the line-of-sight averaged images to obtain deconvoluted images. The deconvoluted maps of temperature are compared with the temperature data obtained by using a physical thermocouple probe. (c) 2023 Optica Publishing Group

Author

Devashish Chorey

University of Gothenburg

Indian Institute of Technology

Vishal Jagadale

Indian Institute of Technology

Megha Prakash

University of Gothenburg

Dag Hanstorp

University of Gothenburg

Mats Andersson

Energy Conversion and Propulsion Systems

Devendra Deshmukh

Indian Institute of Technology

Yogeshwar Nath Mishra

University of Gothenburg

Indian Institute of Technology

California Institute of Technology (Caltech)

Applied Optics

1559-128X (ISSN) 2155-3165 (eISSN)

Vol. 62 14 3737-3746

Subject Categories

Energy Engineering

Atom and Molecular Physics and Optics

Other Physics Topics

DOI

10.1364/AO.484213

More information

Latest update

5/29/2024