Planar imaging of laser-induced fluorescence of CH radical is made to examine combustion processes in a valveless pulse combustor. An excimer-pumped dye laser tuned to a wavelength of 387 nm is used to excite the line of (0,0) band of the system of CH radical, and an image-intensified CCD camera system is used to detect the (0,1) band emission at around 435 nm. According to the CH-LIF images, it is found that the progress in combustion during a pulsation period is expressed by the enlargement and breakup of the earlobe-shaped flame front along the outline of a pair of large-scale eddies of fresh mixture.
Optical Analysis of Pulse Combustion Using Shadowgraph and Planar CH-LIF Imaging Technique
Contributed by the Fuels and Combustion Technologies Division and presented at the 2nd International Symposium on Advanced Energy Conversion Systems and Related Technologies, Nagoya, Japan, December 1–3, 1998, of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS. Manuscript received by the FACT Division, March 15, 2000; revised manuscript received October 30, 2000 Associate Editor: C. Saltiel.
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Ishino, Y., Hasegawa, T., Yamaguchi, S., and Ohiwa, N. (October 30, 2000). "Optical Analysis of Pulse Combustion Using Shadowgraph and Planar CH-LIF Imaging Technique ." ASME. J. Energy Resour. Technol. March 2001; 123(1): 59–63. https://doi.org/10.1115/1.1348015
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