Topic
Diffusion flame
About: Diffusion flame is a research topic. Over the lifetime, 9266 publications have been published within this topic receiving 233522 citations.
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TL;DR: In this paper, two critical steps towards soot production in combustors are the decomposition of the fuel and the subsequent formation of aromatic hydrocarbons with one to three benzenoid rings.
499 citations
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TL;DR: In this article, the authors describe mesures sont effectuees sur une flamme a diffusion d'ethylene laminaire et asymetrique, permettant une amelioration de la qualite des informations.
Abstract: Description de l'affinement de l'echantillonnage thermophoretique permettant une amelioration de la qualite des informations. Les mesures sont effectuees sur une flamme a diffusion d'ethylene laminaire et asymetrique
490 citations
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TL;DR: In this article, the Lagrangian flamelet model is applied in a large-eddy simulation of a piloted partially premixed methane/air diffusion flame (Sandia flame D) and the results of the simulation are compared to experimental data of the mean and RMS of the axial velocity and the mixture fraction and the unconditional and conditional averages of temperature and various species mass fractions, including CO and NO.
Abstract: The Lagrangian Flamelet Model is formulated as a combustion model for large-eddy simulations of turbulent jet diffusion flames. The model is applied in a large-eddy simulation of a piloted partially premixed methane/air diffusion flame (Sandia flame D). The results of the simulation are compared to experimental data of the mean and RMS of the axial velocity and the mixture fraction and the unconditional and conditional averages of temperature and various species mass fractions, including CO and NO. All quantities are in good agreement with the experiments. The results indicate in accordance with experimental findings that regions of high strain appear in layer like structures, which are directed inwards and tend to align with the reaction zone, where the turbulence is fully developed. The analysis of the conditional temperature and mass fractions reveals a strong influence of the partial premixing of the fuel.
474 citations
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TL;DR: In this paper, the structure of soot aggregates was investigated, emphasizing the fractal properties as well as the relationships between the properties of actual and projected soot images. And the authors found that soot aggregate fractal property is relatively independent of fuel type and flame condition, yielding a fractal dimension of 1.82 with experimental uncertainties of 0.08 and 0.5, respectively.
446 citations
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TL;DR: In this article, various factors affecting the determination of laminar flames speeds from outwardly propagating spherical flames in a constant-pressure combustion chamber were considered, with emphasis on the nonlinear variation of the stretched flame speed to the flame stretch rate, and the associated need to nonlinearly extrapolate the stretched flames speed to yield an accurate determination of the Laminar flame speed and Markstein length.
445 citations