The Transport and Growth of Soot Particles in Laminar Diffusion Flames

Santoro, Robert J.; Yeh, Tsyh Tyan; Horvath, J. J.; Semerjian, Hratch G.

doi:10.1080/00102208708947022

Cited by 404 publications

(201 citation statements)

References 16 publications

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“…These authors reported some discrepancies between their numerical soot volume fraction and temperature fields and the measurements in the experimental study of McEnally et al [37]. Reproducing the experimental conditions of Santoro et al [38], Arana et al [39] also reported discrepancies among experimental measurements of soot volume fraction that can be especially attributed to the flow features in the vicinity of the burner tip. As a result, the quantitative agreement between the experimental and numerical maps shown in Fig.12 is not expected.…”

Section: Methodsmentioning

confidence: 69%

“…Arana et al [39] faced a similar issue and had to fit the soot refractive index to closely reproduce the profiles of Santoro et al [38]. As argued by Arana et al, the discrepancies among experimental data can be partly attributed to the high sensitivity of the onset of soot formation to the flow features in the vicinity of the burner tip.…”

Section: Soot Volume Fraction Fieldsmentioning

confidence: 97%

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Simultaneous soot temperature and volume fraction measurements in axis-symmetric flames by a two-dimensional modulated absorption/emission technique

Legros

Wang

Bonnety

et al. 2015

Combustion and Flame

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multaneous soot temperature and volume fraction measurements in axis-symmetric flames by a twodimensional modulated absorption/emission technique. Combustion and Flame, Elsevier, 2015, 162, pp.2705 -2719. <10.1016/j.combustflame.2015 AbstractThe original contribution of the present paper is to present a joint theoretical and experimental approach to implement the modulated absorption/emission technique. Two-dimensional fields of soot temperature and volume fraction can then be measured simultaneously in a reference steady laminar coflow axis-symmetric non-premixed ethylene flame estalished over * Corresponding author Email addresses: guillaume.legros@dalembert.upmc.fr (Guillaume Legros ), wangqianlong212@gmail.com (Qianlong Wang), jerome.bonnety@upmc.fr (Jérôme Bonnety), muhammad.kashif@ucp.edu.pk (Muhammad Kashif), celine.morin@univ-valenciennes.fr (Céline Morin), jean-louis.consalvi@univ-amu.fr (Jean-Louis Consalvi),

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Section: Methodsmentioning

confidence: 69%

Section: Soot Volume Fraction Fieldsmentioning

confidence: 97%

Simultaneous soot temperature and volume fraction measurements in axis-symmetric flames by a two-dimensional modulated absorption/emission technique

Legros

Wang

Bonnety

et al. 2015

Combustion and Flame

View full text Add to dashboard Cite

show abstract

“…The flame was stabilized on a stainless steel burner consisting of two concentric tubes with inner diameters of 11.1 and 101 mm, as described by Santoro et al (1987). The ethylene and air flow rates were controlled by mass flow meters to be maintained at 0.231 and 42.78 standard liters per minute (SLPM), resulting in a visible stabilized flame height above the burner of 88 mm.…”

Section: Methodsmentioning

confidence: 99%

Particle Size Distribution of Soot from a Laminar/Diffusion Flame

Chen

Zhou

et al. 2017

Aerosol Air Qual. Res.

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A practical method is proposed to determine the inflame soot particle size distribution via an explicit solution derived from time-resolved laser-induced incandescence (TiRe-LII). Three appropriate time intervals are selected from the TiRe-LII decay signal. The equivalent mean sizes as well as relative ratios of number densities for three classes of monodisperse particles are determined with the mono-exponential fit to each interval, which allows an explicit solution for the particle size distribution. Simulations show that inversed log-normal distributions from the explicit solution are coincident with the input parameters in terms of trend, and there exist critical time intervals where inversed results are most insensitive to the variation of interval length. The error of inversion is critically dependent on the geometric standard deviation but weakly dependent on the count median particle diameter. Influences of experimental conditions on the inversed error are additionally evaluated. The results show that flame temperature has a significant impact on the error of inversion. Thus, a database of the error as a function of flame temperature at a fixed aggregate size is established. The error database allowed the inversed results from experimental TiRe-LII signals to be readily corrected at various flame locations by interpolation. The corrected inversed log-normal distributions were consistent in trend with those determined from the established nonlinear regression method, and the modeling LII signals reproduced agree with the experimental data. The small deviation of the results potentially stemmed from the statistical noise contained in recorded LII signals.

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“…(12), will assume the respective variable value. The thermophoretic velocity vector is calculated following Santoro et al [18].…”

Section: Soot Formation Modelmentioning

confidence: 99%

Numerical Prediction of Radiation and Air Preheating Effects on the Soot Formation in a Confined Laminar Co-Flow Diffusion Flame

Mandal¹,

Chowdhuri²,

Chakrabarti³

2015

Int. J. Thermo

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A numerical model has been developed for thorough investigation of the radiation and air-preheating effect on the sooting behavior of a diffusion flame. An explicit finite difference scheme has been adopted for the solution of different conservation equations for reacting flows along with the soot conservation equations. A variable size adaptive grid system has been considered using hyperbolic distribution to capture the sharp gradients of the field variables. Temperature distribution pattern does not change when radiation effect is considered, but peak temperature is lowered due to radiative heat loss. On the other hand, air-preheating not only increases the peak temperature, but also changes the distribution pattern significantly. Radiation decreases the soot volume fraction and soot number density to a large extent both for non-preheated and preheated case. Soot diameter is not much affected due to radiation, but it increases with preheating of air.

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The Transport and Growth of Soot Particles in Laminar Diffusion Flames

Cited by 404 publications

References 16 publications

Simultaneous soot temperature and volume fraction measurements in axis-symmetric flames by a two-dimensional modulated absorption/emission technique

Simultaneous soot temperature and volume fraction measurements in axis-symmetric flames by a two-dimensional modulated absorption/emission technique

Particle Size Distribution of Soot from a Laminar/Diffusion Flame

Numerical Prediction of Radiation and Air Preheating Effects on the Soot Formation in a Confined Laminar Co-Flow Diffusion Flame

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