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Appl. Sci. 2017, 7(10), 990; doi:10.3390/app7100990

A Study of Two Dimensional Tomography Reconstruction of Temperature and Gas Concentration in a Combustion Field Using TDLAS

1,2
,
1,2,* , 1,3
,
1
and
1,2,3,*
1
Anhui Provincial Key Laboratory of Photonic Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
2
Key Lab of Environmental Optics & Technology, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China
3
School of Environmental Science & Optoelectronic Technology, University of Science and Technology of China, Hefei 230026, China
*
Authors to whom correspondence should be addressed.
Received: 30 July 2017 / Revised: 11 September 2017 / Accepted: 20 September 2017 / Published: 25 September 2017
View Full-Text   |   Download PDF [6580 KB, uploaded 26 September 2017]   |  

Abstract

Based on tunable diode laser absorption spectroscopy (TDLAS), two-dimensional (2D) distribution reconstructions of gas concentration and temperature are realized using an algebraic reconstruction technique (ART). The influence of the beam distribution and grid size on combustion field reconstruction is investigated to attain optimal reconstruction results with a limited number of beams. Under limited optical-path numbers, it shows that a better spatial resolution is attainable only when the laser beam paths are vertical and parallel to the symmetry axis of the combustion field. Furthermore, experiments with 16 beam paths using one and two flat flame combustion fields are carried out in different fuel-air equivalence ratios under room temperature. The results are in agreement with the simulation results, and the time resolution is less than 1 s. View Full-Text
Keywords: absorption; spectroscopy; diode lasers; temperature; combustion diagnostics; tomographic imaging absorption; spectroscopy; diode lasers; temperature; combustion diagnostics; tomographic imaging
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sun, P.; Zhang, Z.; Li, Z.; Guo, Q.; Dong, F. A Study of Two Dimensional Tomography Reconstruction of Temperature and Gas Concentration in a Combustion Field Using TDLAS. Appl. Sci. 2017, 7, 990.

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