Measurement and modeling of the sooting propensity of binary fuel mixtures

Trottier, Stephanie; Guo, Hongsheng; Smallwood, Gregory J.; Johnson, Matthew R.

doi:10.1016/j.proci.2006.07.229

Cited by 43 publications

(49 citation statements)

References 26 publications

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“…This is a stable and repeatable flame for which detailed measured soot volume fraction data were available [35]. Figure 3 summarizes the key measurement results.…”

Section: Equipmentmentioning

confidence: 99%

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Analysis of uncertainties in instantaneous soot volume fraction measurements using two-dimensional, auto-compensating, laser-induced incandescence (2D-AC-LII)

2010

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“…This is a stable and repeatable flame for which detailed measured soot volume fraction data were available [35]. Figure 3 summarizes the key measurement results.…”

Section: Equipmentmentioning

confidence: 99%

“…3c is the 100-image averaged soot volume fraction. Two-dimensional line-of-sight attenuation (2D-LOSA) measurements of soot volume fraction [35], are included in Fig. 3d for comparison.…”

Section: Equipmentmentioning

confidence: 99%

Analysis of uncertainties in instantaneous soot volume fraction measurements using two-dimensional, auto-compensating, laser-induced incandescence (2D-AC-LII)

2010

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“…They concluded that the synergistic phenomenon was caused by the ability of methane to produce methyl (CH 3 ) radical that promoted production channels of aromatics that relied on oddcarbon-numbered species, such as propargyl (C 3 H 3 ). More recently, Trottier et al [7] carried out a detailed study on the sooting propensity of various binary fuel mixtures, and observed the synergistic phenomenon in some mixtures but not in others. Further analysis of [7] also suggested that the synergistic phenomenon resulted from the enhanced production of CH 3 radical.…”

Section: Introductionmentioning

confidence: 99%

“…More recently, Trottier et al [7] carried out a detailed study on the sooting propensity of various binary fuel mixtures, and observed the synergistic phenomenon in some mixtures but not in others. Further analysis of [7] also suggested that the synergistic phenomenon resulted from the enhanced production of CH 3 radical. McEnally and Pfefferle [8] measured soot volume fractions along the centerline of ethylene/air nonpremixed flames when dimethyl ether (DME) and ethanol (EtOH) were added, and found that the addition of either DME or EtOH enhanced the soot volume fraction, although pure DME and EtOH diffusion flames produced less soot than ethylene.…”

Section: Introductionmentioning

confidence: 99%

“…Most above studies on the synergistic phenomenon were by experiments. Two of them contained numerical investigations, but they either completely neglected soot [3] or employed simplified soot model [7]. Therefore, it is necessary to further investigate the synergistic phenomenon in the combustion of binary fuel mixtures by detailed numerical simulation.…”

Section: Introductionmentioning

confidence: 99%

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A Numerical Investigation on Soot Formation From Laminar Diffusion Flames of Ethylene/Methane Mixture

Guo

Trottier²,

Johnson

et al. 2008

Heat Transfer: Volume 3

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The sooting propensity of laminar diffusion flames employing ethylene/methane mixture fuel is investigated by numerical simulation. Detailed gas phase chemistry and moments method are used to describe the chemical reaction process and soot particle dynamics, respectively. The numerical model captures the primary features experimentally observed previously. At constant temperatures of air and fuel mixture, both maximum soot volume fraction and soot yield monotonically decrease with increasing the fraction of carbon from methane in the fuel mixture. However, when the temperatures of air and fuel mixture are preheated so that the adiabatic temperatures of all flames are same, the variation of the maximum soot yield becomes higher than what would be expected from a linear combination of the flames of pure ethylene and pure methane, showing a synergistic phenomenon in soot formation. Further analysis of the details of the numerical results suggests that the synergistic phenomenon is caused by the combined effects of the variations in the concentrations of acetylene (C 2 H 2 ) and methyl radical (CH 3 ). When the fraction of carbon from methane in fuel mixture increases, the concentration of C 2 H 2 monotonically decreases, whereas that of methyl radical increases, resulting in a synergistic phenomenon in the variation of propargyl (C 3 H 3 ) radical concentration due to the reactions C 2 H 2 + CH 3 = PC 3 H 4 + H and PC 3 H 4 + H = C 3 H 3 + H 2 . This synergistic phenomenon causes a qualitatively similar variation trend in the concentration of pyrene (A4) owing to the reaction paths C 3 H 3 → A1 (benzene) → A2 (naphthalene) → A3 (phenanthrene) → A4. Consequently, the synergistic effect occurs for soot inception and PAH condensation rates, leading to the synergistic phenomenon in soot yield. The similar synergistic phenomenon is not observed in the variation of peak soot volume fraction, since the maximum surface growth rate monotonically decreases, as the fraction of carbon from methane in fuel mixture increases.

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The concept of 2D gated imaging for particle sizing in a laminar diffusion flame

et al. 2013

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In this work time-resolved laser-induced incandescence (TiRe LII) has been employed to measure primary particle diameters of soot in an atmospheric laminar ethylene diffusion flame. The generated data set complements existing data determined in one single location and takes advantage of the good spatial resolution of the ICCD detection. Time resolution is achieved by shifting the camera gate along the LII decay. One key input parameter for the analysis of time-resolved LII is the local flame temperature. This was determined on a grid throughout the flame by coherent anti-Stokes Raman scattering. The accurate temperature data, in combination with other published data from this flame, are well suited for soot model validation purposes while we showed feasibility of a shifted gate approach to deduce 2D particle sizes in the chosen standard flame.

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Measurement and modeling of the sooting propensity of binary fuel mixtures

Cited by 43 publications

References 26 publications

Analysis of uncertainties in instantaneous soot volume fraction measurements using two-dimensional, auto-compensating, laser-induced incandescence (2D-AC-LII)

Analysis of uncertainties in instantaneous soot volume fraction measurements using two-dimensional, auto-compensating, laser-induced incandescence (2D-AC-LII)

A Numerical Investigation on Soot Formation From Laminar Diffusion Flames of Ethylene/Methane Mixture

The concept of 2D gated imaging for particle sizing in a laminar diffusion flame

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