Chemiluminescence intensities of excited radicals in ammonia-methane-air twinFlames

Published: 9 March 2021| Version 2 | DOI: 10.17632/9rbpvp8rkt.2


Measured chemiluminescence intensities from main excited radicals (NO*, OH*, NH*, CN*, CO2*, and CH*) in the UV/blue range in ammonia-methane-air laminar premixed twin-flames. For each of the 6 excited radicals, 6 data files are provided (total of 36 files available): - 1 file (e.g., OH_Phi.txt) gives the chemiluminescence intensity as a function of equivalence ratio for 10 different ammonia fractions in the fuel blend and for a fixed strain rate of 150 /s. - 5 files (e.g., NH_Strain_XNH3040_Phi080.txt) give the chemiluminescence intensity as a function of strain rate for a fixed equivalence ratio and a fixed ammonia fraction in the fuel blend. The chemiluminescence intensities are obtained by integrating each flame's chemiluminescence spectrum (after CO2*-background is removed if applicable) over specified wavelengths ranges: - for NO* between 220 and 275 nm - for OH* between 300 and 327 nm - for NH* between 328 and 347 nm - for CO2* between 347 and 349 nm - for CN* between 349 and 364 nm - for CH* between 429 and 444 nm All chemiluminescence intensities are normalized by that of OH* for Phi = 1.0, XNH3 = 0 (pure methane), and a = 150 /s.


Steps to reproduce

The manuscript that details necessary hardware and steps to reproduce these data has been submitted for publication in Combust. Flame


King Abdullah University of Science and Technology Clean Combustion Research Center


Chemiluminescence, Strain Rate, Chemiluminescence Sensor, Laminar Flame, Excited Chemical Species, Methane, Ammonia