Gas-phase radiative effects on the burning and extinction of a solid fuel

Rhatigan, Jennifer L.; Bedir, Hasan; T’ien, James S.

doi:10.1016/s0010-2180(97)81771-3

Cited by 61 publications

(20 citation statements)

References 18 publications

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“…The correction factor of C = 0 suggested that the radiative heat loss balanced with the reabsorption (which was not considered in the present detailed computation). The correction factor used for air in this study (C = 0.5) was comparable to the value (0.54) reported previously [33] for solid fuel burning in an impinging air flow. Although the simplified radiation model with a correction factor has a lower level of complexity than the full-chemistry model used, the detailed flame structure and flowtransport-chemistry interactions obtained should provide useful insight into the complex blowoff processes.…”

Section: Extinguishing Limitssupporting

confidence: 85%

“…At µg, because of smaller heat-release rates and generally longer residence times, the radiative heat loss becomes more significant than it is at 1g n . It has been reported [32,33] that the gray-gas radiation model overpredicts radiative loss. This trend becomes particularly evident when CO 2 is added at high concentrations to oxygen-enriched environments (which have higher flame temperatures).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Extinguishment of methane diffusion flames by carbon dioxide in coflow air and oxygen-enriched microgravity environments

Takahashi

Linteris

Katta

2008

Combustion and Flame

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Section: Extinguishing Limitssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Extinguishment of methane diffusion flames by carbon dioxide in coflow air and oxygen-enriched microgravity environments

Takahashi

Linteris

Katta

2008

Combustion and Flame

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“…He found that two extinction limits existed, that is, extinction due to the flame stretch and radiative extinction due to the surface radiative heat loss. Rhatigan et al [9] improved T'ien's model by introducing the statistical narrow-band (SNB) model and studied gas radiation effects on the burning and extinction of a solid fuel. They found that the surface radiative emission was greater than the gas phase radiative influx to the solid fuel.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Radiation Effects on Polypropylene Combustion Using High-temperature Oxidizer Diluted with H2O and CO2

Yoshinaga

Kobayashi

2008

JTST

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Combustion of polypropylene (PP) in a high-temperature, low-oxygen oxidizer enriched with H 2 O and CO 2 in stagnation-point flow was studied numerically to explore fundamental characteristics of polymer incineration under the condition of high-temperature air combustion (HiTAC). The detailed chemistry of propene as a decomposition gas was used for the calculation. Two typical gas radiation models, i.e., the optically thin model (OTM) and the statistical narrow-band (SNB) model, were employed to clarify the effect of gas radiation on PP combustion as well as the validity of the use of these models under HiTAC conditions because the H 2 O and CO 2 included in the burnt gas recirculated in HiTAC furnaces are highly radiative species. Results showed that, under HiTAC conditions, calculations using OTM overpredicts regression rates compared with those using SNB, indicating that OTM is not suitable for use with polymer combustion under HiTAC conditions, while the differences of these gas radiation models were slight when ordinary air at high temperature was used as an oxidizer. It was also shown that when SNB was used, CO 2 enrichment in the oxidizer hardly enhanced the regression because CO 2 near the PP surface behaves as a barrier against the radiative heat flux. The most effective condition to increase the regression rate is to maintain a higher concentration of H 2 O in the high-temperature oxidizer so as to enhance the gas radiation to the PP surface.

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“…Previously, various steady models were developed for the near extinctionlimit diffusion flames in one-dimensional stagnation point flow and two-dimensional opposed flow configurations [10,[13][14][15][16][17]. Interesting phenomena have been reported, including radiative heat loss effect for near-quenching flame and transition from enveloped to open-tip flame near blowoff.…”

Section: Introductionmentioning

confidence: 99%

A three-dimensional transient model for flame growth and extinction in concurrent flows

Zhao

T’ien

2015

Combustion and Flame

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Gas-phase radiative effects on the burning and extinction of a solid fuel

Cited by 61 publications

References 18 publications

Extinguishment of methane diffusion flames by carbon dioxide in coflow air and oxygen-enriched microgravity environments

Extinguishment of methane diffusion flames by carbon dioxide in coflow air and oxygen-enriched microgravity environments

Numerical Study of Radiation Effects on Polypropylene Combustion Using High-temperature Oxidizer Diluted with H2O and CO2

A three-dimensional transient model for flame growth and extinction in concurrent flows

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