Study of soot growth in a plug flow reactor using a moving sectional model

Wen, John Z.; Thomson, Murray J.; Park, S.H.; Rogak, Steven N.; Lightstone, M.F.

doi:10.1016/j.proci.2004.08.178

Cited by 67 publications

(43 citation statements)

References 16 publications

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“…Les particules sont regroupées par classes de taille, chaque classe étant caractérisée par une particule «moyenne» affectée d'une masse moyenne et leur cinétique est représentée sous la forme d'une loi d'Arrhénius. Des détails sur cette méthode sont disponibles dans les références [22,23].…”

Section: -P10unclassified

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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Section: -P10unclassified

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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“…The model basically consists of two parts: a detailed gas-phase reaction mechanism describing soot chemistry; and a model for the aerosol particle dynamics which includes statistical treatments of simultaneous particle nucleation, coagulation of particles, surface condensation, surface growth and oxidation. However, the accuracies of such detailed soot models are dependent on the inception, surface growth and surface condensation mechanisms, and their present use is impaired by poor representation of soot inception chemistry [43]. Further, these models are expensive in terms of CPU time, even when undertaking simulations of laminar flames.…”

Section: Soot Formation Modelmentioning

confidence: 99%

Conditional moment closure modelling of soot formation in turbulent, non-premixed methane and propane flames

Woolley

Fairweather

Yunardi

2009

Fuel

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Published paperPresented are results obtained from the incorporation of a semi-empirical soot model into a first-order conditional moment closure (CMC) approach to modelling turbulent, non-premixed methane-and propane-air flames. Soot formation is determined via the solution of two transport equations for soot mass fraction and particle number density, with acetylene and benzene employed as the incipient species responsible for soot nucleation, and the concentrations of these calculated using a detailed gas-phase kinetic scheme involving 70 species. The study focuses on the influence of differential diffusion of soot particles on soot volume fraction predictions. The results of calculations are compared with experimental data for atmospheric and 3 atmosphere methane flames, and propane flames with air preheated to 323 K and 773 K. Overall, the study demonstrates that the model, when used in conjunction with a representation of differential diffusion effects, is capable of accurately predicting soot formation in the turbulent non-premixed flames considered.

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“…This was helped by com- busting fuel in the JSR, so that it entered the PFR well mixed. Wen et al [16] demonstrated the application of a moving sectional model to predict Kronholm's experimental results. A stochastic simulation using the method outlined here was performed and compared to the data given by Kronholm and Wen.…”

Section: Kronholm Plug-flow Experimentsmentioning

confidence: 99%

“…However, the method of moments requires extrapolation to find additional moments and gives no information about the shape of the particle size distribution (PSD). Galerkin methods [15] and fixed [9] or moving [16] sectional techniques have been used to describe a soot population with some degree of resolution of the PSD, although these techniques suffer from numerical diffusion and are more computationally expensive than the method of moments.…”

Section: Introductionmentioning

confidence: 99%

Coupling a stochastic soot population balance to gas-phase chemistry using operator splitting

Celnik

Kraft

Wagner

2007

Combustion and Flame

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Study of soot growth in a plug flow reactor using a moving sectional model

Cited by 67 publications

References 16 publications

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

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

Conditional moment closure modelling of soot formation in turbulent, non-premixed methane and propane flames

Coupling a stochastic soot population balance to gas-phase chemistry using operator splitting

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