Stagnation-point combustion with radiation

Kinoshita, C.M.; Pagni, Patrick J.

doi:10.1016/s0082-0784(81)80145-2

Cited by 6 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Radiation effects are discussed elsewhere [21]. Attention should also be p'aid to the details of the nozzle shape and size since that defines the free-stream condition.…”

Section: Resultsmentioning

confidence: 99%

Opposed flow diffusion flame extensions

Kinoshita

Pagni

Beier

1981

Symposium (International) on Combustion

Self Cite

View full text Add to dashboard Cite

“…Radiation effects are discussed elsewhere [21]. Attention should also be p'aid to the details of the nozzle shape and size since that defines the free-stream condition.…”

Section: Resultsmentioning

confidence: 99%

Opposed flow diffusion flame extensions

Kinoshita

Pagni

Beier

1981

Symposium (International) on Combustion

Self Cite

View full text Add to dashboard Cite

“…In OTM, the self-absorption of the gas is neglected under the assumption that the optical thickness of the medium is sufficiently thin. The heat flux to the PP surface and the volumetric rate of radiative heat loss calculated using OTM are written as [16] …”

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

View full text Add to dashboard Cite

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.

show abstract

“…When solving such problems, fundamental approximations such as the flame sheet and boundary layer approximations have been made by a number of studies (Emmons, 1956;Pagni and Shih, 1976;Groff and Faeth, 1978;Kinoshita and Pagni, 1980). However the study of diffusion flame stabilization, extinction and the onset of chemical reaction in the leading flame front region necessitates that the theoretical analysis take account of finite rate chemical kinetics and upstream transport of heat and mass.…”

mentioning

confidence: 99%

“…Tamanini (1978), Kinoshita and Pagni (1980), Sibulkin et al (1981), and Liu and Shih (1980) are among those who included radiation in their problems. Tien and Lee (1982), and de Ris (1979) reviewed previous studies on thermal radiation from flames.…”

mentioning

confidence: 99%

Effect of Radiation on Diffusion Flame Behavior over a Combustible Solid

Kim.¹,

Baek²,

Kaplan³

1993

Combustion Sc. & Tech.

View full text Add to dashboard Cite

The effects of two-dimensional gas radiation on the flame behavior over a solid fuel plate are explored. The theoretical model includes the elliptic type of momentum, energy and species equations with a second-order single-step chemical reaction model of the Arrhenius type. The discrete ordinates method is employed to solve the radiative transfer equation. Numerical calculations are performed for a wide range of mass absorption coefficients and wall emissivities to characterize the flame behavior. When the gas radiation is stronger, the radiative heat loss causes the flame to retreat downstream, causes shrinkage of the flame size, and causes a decrease in the maximum flame temperature. The flame configuration is thus strongly affected by the gas radiation process.

show abstract

Stagnation-point combustion with radiation

Cited by 6 publications

References 11 publications

Opposed flow diffusion flame extensions

Opposed flow diffusion flame extensions

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

Effect of Radiation on Diffusion Flame Behavior over a Combustible Solid

Contact Info

Product

Resources

About