Spherical expanding flames in H2–N2O–Ar mixtures: flame speed measurements and kinetic modeling

Mével, Rémy; Lafosse, Fabien; Chaumeix, Nabiha; Dupré, G.; Paillard, C.

doi:10.1016/j.ijhydene.2009.08.054

Cited by 57 publications

(47 citation statements)

References 22 publications

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“…The detailed model can also be used to predict laminar flame speeds for H 2 -N 2 O-Ar mixtures as shown in [33,53]. Through this extensive validation, the present detailed kinetic mechanism for H 2 -N 2 O mixtures is suitable for the modeling of a wide range of combustion events and initial conditions.…”

Section: Kinetic Scheme Validationmentioning

confidence: 92%

“…Previous studies on hydrogen-nitrous oxide mixtures have generated data sets on the ignition delay time [15,16,17,18,19,20,21,22,23,24,25,26], the laminar burning speed [27,28,29,30,31,32,33,34,35], and the minimum ignition energy [36]. Concerning detonation, Zhang et al measured the critical energy for direct initiation [37] and the cell sizes have been measured [38,39] in the frame work of nuclear waste storage risk assessment.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Detonation in hydrogen–nitrous oxide–diluent mixtures: An experimental and numerical study

Mével

Davidenko

Lafosse

et al. 2015

Combustion and Flame

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Section: Kinetic Scheme Validationmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Detonation in hydrogen–nitrous oxide–diluent mixtures: An experimental and numerical study

Mével

Davidenko

Lafosse

et al. 2015

Combustion and Flame

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“…To investigate these processes at a more fundamental level, a number of studies involving the pyrolysis of N2O and the oxidation of hydrogen/NOx and syngas/NOx have been performed in shock tubes [8,[16][17][18][19][20][21][22][23][24][25][26][27], jet-stirred reactors (JSR) [28][29][30], flow reactors (FR) [9,10,31,32] and spherical expanding laminar flames [33,34]. Simultaneously, many relative kinetic mechanisms [9,10,13,28,32,[35][36][37][38][39][40][41][42][43] have also been proposed to improve our understanding of NOx formation and to develop NOx control strategies.…”

Section: Introductionmentioning

confidence: 99%

Assessing the predictions of a NO x kinetic mechanism on recent hydrogen and syngas experimental data

Zhang

Mathieu

Petersen

et al. 2017

Combustion and Flame

174

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A detailed chemical kinetic mechanism has been developed to describe the pyrolysis and oxidation of the hydrogen/NOx and syngas/NOx systems. The thermodynamic data of nitrogenous compounds have been updated based on the study of Bugler et al. [J. Bugler, K.P. Somers, J.M. Simmie, F. Güthe, H.J. Curran. J. Phys. Chem. A, 2016, 120(36):7192-7197.]. The rate constants of individual elementary reactions associated with the Zeldovich mechanism, the N/O sub-mechanism (NO2, N2O and NO3), the H/N/O sub-mechanism (HNO/HON, HNO2/HONO and HONO2) and the NH3 mechanism (NNH and NH2OH) have been selected through a synthetic comparison of the data available in the literature and the adoption of the latest available published rate constant data. The proposed mechanism has been validated against a large number of experimental data including pyrolysis histories, ignition delay time data, species profile versus time and temperature and flame speed measurements over a wide range of initial combustion conditions and various experimental devices including shock tubes, flow reactors, jet-stirred reactors and spherical combustion bombs.The simulations of the proposed model have also been compared to those from five recently published kinetic models available in the literature. It was found that although these mechanisms generally reproduced well the data for which they were validated, they did not globally capture the combustion characteristics of all of the hydrogen/NOx and syngas/NOx systems.Finally, the proposed model has been used to simulate the formation of NO at practical gas-turbine relevant conditions. A detailed flux analysis has been performed to kinetically explore the NO formation mechanism under various combustion conditions.

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“…The mean distance D d-d is then comparable to the flame thickness, d L , estimated based on the H 2 diffusion coefficient, D H2 and the laminar flame speed S L°( d L = D H2 /S L°) . Since S L°c annot be measured close to the downward limit (9%H 2 ), it has been estimated using COSILAB [31] with the detailed mechanism of Mével et al [32]. In these conditions the adiabatic flame temperature was 1243 K, S L°w as 4.2 cm/s leading to a flame thickness d L = 0.7 mm.…”

Section: H 2 /Air/water Mistmentioning

confidence: 99%

“…The s 0 L were calculated by using COSILAB code [31] with kinetic model of Mével et al [32]. The flame speed was estimated by multiplying s 0 L by the expansion coefficient r. The different values are summarized in Table S3 in Supplement.…”

Section: Isolated Droplet and Laminar Flamementioning

confidence: 99%

Effects of water sprays on flame propagation in hydrogen/air/steam mixtures

Cheikhravat

Goulier

Boutarfaïa

et al. 2015

Proceedings of the Combustion Institute

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Spherical expanding flames in H2–N2O–Ar mixtures: flame speed measurements and kinetic modeling

Cited by 57 publications

References 22 publications

Detonation in hydrogen–nitrous oxide–diluent mixtures: An experimental and numerical study

Detonation in hydrogen–nitrous oxide–diluent mixtures: An experimental and numerical study

Assessing the predictions of a NO x kinetic mechanism on recent hydrogen and syngas experimental data

Effects of water sprays on flame propagation in hydrogen/air/steam mixtures

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