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|Type:||Artigo de periódico|
|Title:||Experimental Study Of Oh*, Cho*, Ch*, And C2* Radicals In C2h2/o2 And C2h2/o2/ar Flames In A Closed Chamber|
|Abstract:||An experimental study of OH*, CHO*, CH* and C2* radicals in excited electronic states present in C2H2/O2 and C2H2/O2/Ar flames was carry out. Measurements of natural emissions of these species as a function of time were obtained for several combustion processes in a closed chamber. The emission times of all radicals for both C2H2/O2 and C2H2/O2/Ar flames were found to decrease with the increase of Φ from 0.30 to 0.68 and were almost the same Φ = 0.68, Φ = 1.00 and Φ = 1.62. CH*. The C2* production efficiencies were almost constant in the range to Φ > 0.30, while the production efficiencies of OH* and CHO* radicals were reduced as Φ increased. The addition of argon to increase the total initial pressure had practically no effect on the chemiluminescence of radicals, except for the fuel-lean combustion (Φ = 0.30), in which the production efficiencies of excited radicals was reduced.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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