Structure and spectral radiation properties of turbulent ethylene/ air diffusion flames

Gore, J. P.; Faeth, G. M.

doi:10.1016/s0082-0784(88)80385-0

Cited by 83 publications

(53 citation statements)

References 18 publications

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“…In order to avoid the need for detailed chemical kinetic modeling of CO and soot in these complex reacting flows, several workers have pursued approaches emphasizing correlations. While some workers [4] have tried to directly correlate their CO and soot data, others [1,2,[6][7][8][9][10] have used the conserved scalar approach to correlate CO production with the local equivalence ratio (These relations are referred to as state relationships). However, since the quantity of soot formed in a fire has been shown to be a function of scale [5], the correlation of CO with soot implies that the CO state relationship depends on scale (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Faeth and co-workers have extensively investigated the effects of flame size and residence time on the soot concentration in buoyant, turbulent flames [10][11][12]. These studies have shown that, for reasonably long residence times, approximate soot state relationships can be formulated that allow good predictions of radiation [9,13]. These previous workers have not attempted to examine from a fundamental viewpoint the relationship between soot formation and CO in diffusion flames.…”

Section: Introductionmentioning

confidence: 99%

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The Role Of Soot Particle Formation On The Production Of Carbon Monoxide In Fires

Puri¹,

Santoro²

1991

Fire Safety Science - Proceedings of the Third International Sy

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A systematic study of the effects of soot formation on the production of carbon monoxide (CO) in laminar diffusion flames has been conducted. Increased amounts of soot have been observed to result in larger concentrations of CO in the higher regions of the flames. Comparisons of CO state relationships as a function of local equivalence ratio show distinct effects as the local soot volume fraction is varied. Fuel rich regions exhibit lower CO mole fractions as soot concentration increases, whereas higher CO mole fractions are observed under fuel lean conditions. Radiative quenching and competition between soot and CO for OH are examined. Competition for OH is a plausible mechanism that can be responsible for the high CO emissions from fires. Radiative quenching does not seem to playa significant role in fuel rich regions but can be important under fuel lean conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Role Of Soot Particle Formation On The Production Of Carbon Monoxide In Fires

Puri¹,

Santoro²

1991

Fire Safety Science - Proceedings of the Third International Sy

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“…The radiation predominantly involves emission from soot, CO 2 , and H 2 O [1]. The effects of turbulence on radiation in non-premixed flames have been well documented [1][2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Radiation properties of non-premixed turbulent flames have been widely studied both experimentally and theoretically [1][2][3][4][5][6]. Non-premixed flames radiate between 10% and 60% of their chemical energy release depending on fuel type.…”

Section: Introductionmentioning

confidence: 99%

“…The radiation predominantly involves emission from soot, CO 2 , and H 2 O [1]. The effects of turbulence on radiation in non-premixed flames have been well documented [1][2][3][4][5][6].Radiation properties of turbulent premixed flames have not received much attention except for early computations in Ref. [7], where the effects of turbulence on radiation properties of a two-dimensional premixed methane/air flame in a furnace were analyzed.…”

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confidence: 99%

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Thermal radiation properties of turbulent lean premixed methane air flames

Sivathanu

Gore

2000

Proceedings of the Combustion Institute

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Structure and radiation properties of large‐scale natural gas/air diffusion flames

et al. 1986

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Recent data from large-scale turbulent natural gas/air diffusion flames (135-210 MW) were used to evaluate analysis of flame structure and radiation properties. The conserved-scalar formalism, in conjunction with the laminar flamelet concept, was used to estimate flame structure. The discrete-transfer method, in conjunction with a narrow-band radiation model, was used to predict radiative heat fluxes. The narrow-band model considered the nonluminous gas bands of water vapor, carbon dioxide, methane and carbon monoxide in the 1OOO-6000 nm wavelength range. Structure predictions were encouraging, with discrepancies for mean temperatures (ca 200 K in the hottest portions of the flames) comparable to experimental uncertainties, due to thermocouple errors, flame disturbances from ambient winds and lifting and external expansion effects near the injector. Radiative heat flux predictions were also reasonably good, e.g. predictions based on mean scalar properties were generally 15% lower than the measurements. The findings also suggest that continuum radiation from soot is negligible for these flames.

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Structure and spectral radiation properties of turbulent ethylene/ air diffusion flames

Cited by 83 publications

References 18 publications

The Role Of Soot Particle Formation On The Production Of Carbon Monoxide In Fires

The Role Of Soot Particle Formation On The Production Of Carbon Monoxide In Fires

Thermal radiation properties of turbulent lean premixed methane air flames

Structure and radiation properties of large‐scale natural gas/air diffusion flames

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