The infrared emission spectra of a hydrogen flame and' of a natural gas flame have been compared in the region from 1. 7p. to 24p.. Emission bands have been observed at 1.87p., 2.78p. , 4.37p., 6.20p., and 15p. that a re produced by molecules of H 20 and CO2• Another band at 3.316p. is attributed to methane. From 3.0p. to 3.8p. there are a number of rotational lines, some of which may be produc...

A Large Eddy Simulation of a bluff body flame has been carried out using an unstructured grid. The flame, burning a methane-hydrogen fuel with detailed combustion chemistry (based on a mechanism of 18 species) is simulated using STAR-CD. The mixture fraction is used as a conserved scalar, and a subsequently temperature, density and species mass fraction are calculated using a probability densit...

Cavity ringdown spectroscopy (CRDS) of the hydroxyl radical (OH) has been explored in a laminar methane-air flame at atmospheric pressure over a range of equivalence ratio. Laser induced fluorescence of OH calibrated by CRDS in a lean flame compares well to PREMIX calculations using GRI-Mech 3.0. CRDS is a highly sensitive path-integrated diagnostic technique that can yield absolute absorber nu...

Based on the self-built experimental setup, propagation law of explosion flame hydrogen/methane premixed gas with different hydrogen volume fractions in equivalent ratios was investigated under action a corrugated fire-retardant core. The study shows that isolation and suppression effect core at equivalence is either promoted or suppressed, quenched without mixing when ?=0.8and1.0, also ?=1.2in...

Recently, the combustion chemistry of tetrahydrofurfuryl alcohol (THFA), a potential biofuel, was investigated in stoichiometric 20 mol % THFA/methane co-fueled premixed flame at 5.3 kPa by our group (Tran, L.-S.; Carstensen, H.-H.; Foo, K. K.; Lamoureux, N.; Gosselin, S.; Gasnot, L.; El-Bakali, A.; Desgroux, P. Experimental and modeling study high-temperature alcohol. Proc. Combust. Inst. 2021...