Laser-saturated fluorescence measurements in laminar sooting diffusion flames

作者: Changlie Wey

DOI:

关键词: Premixed flameAnalytical chemistryTemperature measurementAdiabatic flame temperatureChemistryHydroxyl radicalFluorescencePhotochemistrySootDiffusionCombustion

摘要: The hydroxyl radical is known to be one of the most important intermediate species in combustion processes. has also been considered a dominant oxidizer soot particles flames. In this investigation concentration profiles sooting diffusion flames were measured by laser-saturated fluorescence (LSF) method. temperature distributions two-line LSF technique and thermocouple. region OH was too weak make accurate measurements. for all four presented herein show that intensities peaked near flame front. intensity dropped sharply toward dark continued declining region. indicate decreased with increasing height investigated. Varying composition resulted corresponding variation maximum temperature. Furthermore, it appears each increased

参考文章(18)
K. G. Neoh, J. B. Howard, A. F. Sarofim, SOOT OXIDATION IN FLAMES Springer, Boston, MA. pp. 261- 282 ,(1981) , 10.1007/978-1-4757-6137-5_9
K. Kohse-Höinghaus, R. Heidenreich, Th. Just, Determination of absolute OH and CH concentrations in a low pressure flame by laser-induced saturated fluorescence Symposium (International) on Combustion. ,vol. 20, pp. 1177- 1185 ,(1985) , 10.1016/S0082-0784(85)80606-8
Andrew P. Baronavski, J. R. McDonald, Measurement of C2 concentrations in an oxygen–acetylene flame: An application of saturation spectroscopy The Journal of Chemical Physics. ,vol. 66, pp. 3300- 3301 ,(1977) , 10.1063/1.434306
G.H. Dieke, H.M. Crosswhite, The ultraviolet bands of OH Fundamental data Journal of Quantitative Spectroscopy and Radiative Transfer. ,vol. 2, pp. 97- 199 ,(1962) , 10.1016/0022-4073(62)90061-4
Campbell D. Carter, J. Thaddeus Salmon, Galen B. King, Normand M. Laurendeau, Feasibility of hydroxyl concentration measurements by laser-saturated fluorescence in high-pressure flames Applied Optics. ,vol. 26, pp. 4551- 4562 ,(1987) , 10.1364/AO.26.004551
ROBERT P. LUCHT, DONALD W. SWEENEY, NORMAND M. LAURENDEAU, Laser-Saturated Fluorescence Measurements of OH in Atmospheric Pressure CH4/O2/N2 Flames Under Sooting and Non-Sooting Conditions Combustion Science and Technology. ,vol. 42, pp. 259- 281 ,(1985) , 10.1080/00102208508960382
A. G. Gaydon, H. G. Wolfhard, R. M. Fristrom, Flames, their structure, radiation and temperature ,(1960)
C. Wey, E.A. Powell, J.I. Jagoda, The effect on soot formation of oxygen in the fuel of a diffusion flame Symposium (International) on Combustion. ,vol. 20, pp. 1017- 1024 ,(1985) , 10.1016/S0082-0784(85)80591-9
John W. Daily, Saturation effects in laser induced fluorescence spectroscopy Applied Optics. ,vol. 16, pp. 568- 571 ,(1977) , 10.1364/AO.16.000568