Studies of aromatic hydrocarbon formation mechanisms in flames: Progress towards closing the fuel gap

McEnally, Charles S.; Pfefferle, Lisa D.; Atakan, Burak; Kohse‐Höinghaus, Katharina

doi:10.1016/j.pecs.2005.11.003

Cited by 503 publications

(341 citation statements)

References 241 publications

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“…Even at low concentration, the presence of these particles in urban air poses a serious public health problem [1,2] and may play a critical role in global warming due to a significant capacity to absorb the incoming solar radiation [3]. Therefore, strategies aiming at the reduction of soot emission by combustion devices are required.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The comprehensive understanding of in-3 ception, growth and subsequent oxidation of soot particles remains a hot issue, especially with respect to complex blends of hydrocarbons [3,12]. More and more studies have focused on soot formation/oxidation for the last two decades, contributing to bridge the knowledge gap required to optimize fuel formulation [3,13,14]. Due to the recent development in computational power, refining the understanding of the aforementioned soot related processes can be achieved when contrasting experimental measurements with data extracted from numerical simulations of reference flames [5,15].…”

Section: Introductionmentioning

confidence: 99%

“…At atmospheric conditions, many practical fuels are liquid mixtures of hundreds of hydrocarbons which have variable and coupled effects on regulated engine emissions and especially soot production [3,9]. To develop a molecular-level understanding of soot formation/oxidation processes along combustion of these practical fuels, many works employ surrogate fuels and gradually increase the complexity of fuel formulation of these surrogates.…”

Section: Introductionmentioning

confidence: 99%

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Sooting propensities of some gasoline surrogate fuels: Combined effects of fuel blending and air vitiation

Kashif

Bonnety

Matynia

et al. 2015

Combustion and Flame

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The sooting propensities of binary mixtures of n-heptane and toluene on one hand, and isooctane and toluene on the other hand are evaluated in haust gas recirculation (EGR). The evolution of the sooting propensity as a function of both toluene mole fraction in the binary mixtures and CO 2 content of the air stream can then be revealed. The sooting tendencies of both kinds of blends decrease in a very linear way with increasing CO 2 content of the air stream. On the opposite, the sooting tendencies of isooctane/toluene blends follow a strongly non-linear relationship with the toluene mole fraction due to synergistic effects while YSIs of n-heptane/toluene blends show very linear trends. Interestingly, these trends match those observed on other configurations of diffusion flames, further strengthening the consistency of the YSI methodology. The combined effects of fuel blending and CO 2 dilution are also exhibited. All these trends can be of great importance for further investigations as toluene and isooctane mole fractions found in commercially available gasoline and gasoline surrogate fuels are prone to affect soot formation through a strong synergistic effect as identified in current study.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sooting propensities of some gasoline surrogate fuels: Combined effects of fuel blending and air vitiation

Kashif

Bonnety

Matynia

et al. 2015

Combustion and Flame

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“…Une revue complète des avancées expérimentales et par modélisation sur la formation des HAP est disponible [31].…”

Section: -P12unclassified

Croissance des HAP et des suies et transition phase gaz-phase solide dans les processus de combustion

Desgroux

Bakali

Mercier

2011

EPJ Web of Conferences

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Abstract. This article is addressed to a scientific community familiar to astrophysics, and most researchers are not familiar with combustion science. Thus the goal is to provide a basic understanding of "the flame" and the different steps that lead to soot particle formation in conditions that are generally close to atmospheric pressure and high temperature, i.e. in conditions far from those encountered in most astrophysical media. Some experimental techniques of sooty flame investigations will also be introduced. The main aim is to outline the concepts and the tools of combustion science to facilitate fruitful scientific exchanges between two communities that are motivated by the understanding of the formation and evolution of PAHs and soot-like particles, in completely different environments. It should be noted that the description does not pretend to be exhaustive at all and certain theoretical and experimental approaches are not described nor even mentioned.Résumé. Cet article s'adresse à une communauté «astrophysique» non familière avec la combustion. Il a pour but de donner quelques bases permettant de comprendre «la flamme» et les étapes chimiques principales conduisant à la formation de particules de suie dans un milieu généralement à pression atmosphérique et haute température, c'est-à-dire dans des conditions de pression et température très éloignées de celles rencontrées dans le milieu interstellaire. Certaines méthodes expérimentales d'investigation de flammes suitées sont également présentées. L'objectif étant de pouvoir jeter des ponts entre deux communautés éloignées mais rassemblées par un même intérêt pour les hydrocarbures aromatiques polycycliques et les particules de suie. Il est clair que la présentation qui est faite ici est très succincte et qu'elle fait l'impasse sur certaines théories, approches, méthodes expérimentales. . .

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Reaction Mechanisms

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Chemically Reacting Flow

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Studies of aromatic hydrocarbon formation mechanisms in flames: Progress towards closing the fuel gap

Cited by 503 publications

References 241 publications

Sooting propensities of some gasoline surrogate fuels: Combined effects of fuel blending and air vitiation

Sooting propensities of some gasoline surrogate fuels: Combined effects of fuel blending and air vitiation

Croissance des HAP et des suies et transition phase gaz-phase solide dans les processus de combustion

Reaction Mechanisms

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