Spatially resolved measurement of OH*, CH*, and C2* chemiluminescence in the reaction zone of laminar methane/air premixed flames
作者： Jun Kojima , Yuji Ikeda , Tsuyoshi Nakajima
DOI: 10.1016/S0082-0784(00)80577-9
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摘要: Spatially and spectrally resolved chemiluminescence were measured in the reaction zone of a laminar premixed methane/air flame at equivalence ratios 0.9–1.5 atmospheric pressure using new Cassegrain mirror system spectrometer with an intensified charge-coupled device. The measurement volume optics was estimated to be 100 μm diameter 800 long. Local spectra showed remarkably high intensity OH * , CH C 2 emission bands. distributions intensities near front roughly revealed. thickness found thinnest among these radicals. had sharp distribution within zone, but its little wider than that either or . Highly local chemiluminescent obtained front. It dependence each rotational vibrational head on ratio almost same as integrated band emissions strong correlations between peak /CH /OH could used investigate stoichiometry. can good marker determine stoichiometry flames for wide range ratios.
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