Experimental and Numerical Analysis of a Low Pressure Stoichiometric Methanol-Air Flame

Pauwels, Jean-François; Carlier, Matthieu; Devolder, P.; Sochet, L. R.

doi:10.1080/00102208908924025

Cited by 23 publications

(21 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The measured species profiles included the major and minor stable species, as well as H, O, OH, and CH 3 O (a combination of methoxy and hydroxymethyl radicals). Pauwels, et al [9] studied a stoichiometric methanol/air flame at with stable species measurements by 80 torr, gas chromatography, and H, O, and OH by electron spin resonance. Bradley et al measured burning velocities over a range of pressures and equivalence ratios, but only report major species profiles using gas chromatography for a single set of conditions (no radical species were measured).…”

Section: Premixed Laminar Flame Profilesmentioning

confidence: 99%

“…The agreement with Bowman's shocktube ignition delay measurements [6] was less satisfactory, and only a small subset of the data were reported. Laminar-flame-species profiles were compared to data of Vandooren and Van Tiggelen [7,8], Pauwels et al [9], and Bradley [10]. Although the calculation technique was not specified, it is apparent that the species profiles were forced to match the data point closest to the burner face.…”

Section: Egolfopoulos Du and Lawmentioning

confidence: 99%

“…Under most conditions, however, the overall rate of fuel consumption is not controlled by the rate coefficients of either these reactions or the initiation reaction. The relative stability of the hydroxymethyl radical results in an appreciable rate for its reaction with molecular oxygen, even at temperatures in excess of The hydroperoxyl radical 1500 K. plays an important role in methanol oxidation well into the high temperature kinetic regime, often demarcated by conditions where the ratio of k 1 /k 9 [M] is greater than order 1.…”

Section: Shock Tubesmentioning

confidence: 99%

“…Temperatures are typically determined using radiation-corrected thermocouple measurements. Species profiles are typically determined by quartz microprobe sampling and gas chromatography for stable species [9,10,57], molecular beam sampling mass spectrometry for both stable and radical species [7,8,58,59], and/or electron spin resonance for H, O and OH [9,60].…”

Section: Premixed Laminar Flamesmentioning

confidence: 99%

See 3 more Smart Citations

A comprehensive mechanism for methanol oxidation

Held

Dryer

1998

Int. J. Chem. Kinet.

177

172

View full text Add to dashboard Cite

A comprehensive detailed chemical kinetic mechanism for methanol oxidation has been developed and validated against multiple experimental data sets. The data are from static-reactor, flow-reactor, shock-tube, and laminar-flame experiments, and cover conditions of temperature from pressure from and equivalence ratio from 0.05-633-2050 K, 0.26-20 atm, 2.6. Methanol oxidation is found to be highly sensitive to the kinetics of the hydroperoxyl radical through a chain-branching reaction sequence involving hydrogen peroxide at low temperatures, and a chain-terminating path at high temperatures. The sensitivity persists at unusually high temperatures due to the fast reaction of comparedThe branching ratio ofwas found to be a more important parameter under the higher temperature conditions, H O 2 due to the rate-controlling nature of the branching reaction of the H-atom formed through CH 3 O thermal decomposition.

show abstract

Section: Premixed Laminar Flame Profilesmentioning

confidence: 99%

Section: Egolfopoulos Du and Lawmentioning

confidence: 99%

Section: Shock Tubesmentioning

confidence: 99%

Section: Premixed Laminar Flamesmentioning

confidence: 99%

See 2 more Smart Citations

A comprehensive mechanism for methanol oxidation

Held

Dryer

1998

Int. J. Chem. Kinet.

177

172

View full text Add to dashboard Cite

show abstract

“…In two recent measurements of intermediate species in low pressure methanol flames [19,20], fair agreement was achieved with computed profiles based on the DW set. The DW model was also used as a starting set in a recent study on burning velocities of premixed methanol/air flames [21].…”

Section: Introductionmentioning

confidence: 73%

Elementary Reactions in the Methanol Oxidation System. Part I: Establishment of the Mechanism and Modelling of Laminar Burning Velocities

Grotheer¹,

Kelm²,

Driver

et al. 1992

Ber Bunsenges Phys Chem

View full text Add to dashboard Cite

A set of combustion relcvant rate coefficients recommended by a group of European kincticists has been tested by calculating laminar burning velocities. Virtually without any adjustments, a good match with cxperirnental data has been achieved for H2/air flames, H2/CO/air flames, and CHJair flamcs. In ordcr to extend this set by inclusion of the reactions forming the CH,OH oxidation subsystem, the current knowledge of these reactions if first reviewed. The extended set yields calculated burning velocities for CH?OH/air flames in good agreement with measurements recently obtained under stretch free conditions. By using a sensitivity analysis, the remaining deficiencies of the model are highlighted and it is made clear where further experimental work is particularly needed.

show abstract