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29 March 2019 Diode laser absorption tomography for swirl flames application
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Proceedings Volume 11046, Fifth International Symposium on Laser Interaction with Matter; 1104633 (2019) https://doi.org/10.1117/12.2524472
Event: Fifth International Symposium on Laser Interaction with Matter, 2018, Changsha, China
Abstract
Tunable Diode Laser Absorption Spectroscopy (TDLAS) has been one of the most powerful techniques for combustion diagnostics in different kinds of burners. Combined with Hyperspectroscopy Tomography (HT), TDLAS can improve its spatial solution. This study reports a TDLAS-tomography system and its application in a swirl burner. The diagnostics system composed of sixteen beams (13X13, 13 parallel beams and 13 vertical beams). Four water vapor absorption lines, 7185.6 cm-1, 7444.3 cm-1, 7466.3 cm-1, and 6807.8 cm-1, were utilized in each beam using time-division-multiplexed (TDM) method at total measuring frequency of 2.5 kHz. A reconstruction routine based on simulated-annealing algorithm was used to deduce distributions of temperature T and water partial pressure PX. Dynamic data was obtained during the ignition of hydrogen fuel at the exit of the scramjet combustor. T and PX distribution of cross section indicate the flame location and its intensity. Successful experiments show great performance of this diagnostic method.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Fei Li, Guojian Kang, Xin Lin, Kuanliang Wang, and Xilong Yu "Diode laser absorption tomography for swirl flames application", Proc. SPIE 11046, Fifth International Symposium on Laser Interaction with Matter, 1104633 (29 March 2019); https://doi.org/10.1117/12.2524472
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