Analysis of the Turbulent, Non-Premixed Combustion of Natural Gas in a Cylindrical Chamber With and Without Thermal Radiation

Silva, C. V.; França, Francis; Vielmo, Horácio A.

doi:10.1080/00102200701244710

Cited by 38 publications

(28 citation statements)

References 16 publications

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“…The investigation in Silva et al [23], which considered the same combustion chamber, provided the relative importance of the combustion kinetics by computing the Damköhler number, and found that the combustion process is governed by Arrhenius rates in the flame core and by Magnussen's rates in all the other regions. This formulation was also successfully employed in [21][22][23]25]. Also, the chemistry described above does not involve soot formation/oxidation, considering that the methane flame is low sooting.…”

Section: Combustion Kineticsmentioning

confidence: 98%

“…Several experimental data for temperature and species concentrations profiles along axial and radial coordinates were presented in [20], in addition to the results provided in the investigations of [23][24][25], making it a good test case for the methodology that is presented in the current study.…”

Section: Problem Statementmentioning

confidence: 99%

“…In the model, the Arrhenius rate acts as a kinetic "switch"; once the flame is ignited, the Magnussen's rate is generally smaller than the Arrhenius rate, so reactions are mixing-limited [29]. The investigation in Silva et al [23], which considered the same combustion chamber, provided the relative importance of the combustion kinetics by computing the Damköhler number, and found that the combustion process is governed by Arrhenius rates in the flame core and by Magnussen's rates in all the other regions. This formulation was also successfully employed in [21][22][23]25].…”

Section: Combustion Kineticsmentioning

confidence: 99%

See 2 more Smart Citations

Numerical simulations of the radiative transfer in a 2D axisymmetric turbulent non-premixed methane–air flame using up-to-date WSGG and gray-gas models

Centeno

Silva

Brittes

2015

J Braz. Soc. Mech. Sci. Eng.

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the computation of radiation with both the CR-WSGG and NCR-WSGG models provided better results than GG model, when compared with experimental data. For the combustion chamber and turbulence and combustion models employed in the present work, it was shown that the CR-WSGG is the recommended model, due to the acceptable agreement with experimental data and relatively low computational requirements in comparison to the NCR-WSGG model. The results show the importance of thermal radiation for an accurate prediction of the thermal behavior of a combustion chamber.

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Section: Combustion Kineticsmentioning

confidence: 98%

Section: Problem Statementmentioning

confidence: 99%

Section: Combustion Kineticsmentioning

confidence: 99%

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Numerical simulations of the radiative transfer in a 2D axisymmetric turbulent non-premixed methane–air flame using up-to-date WSGG and gray-gas models

Centeno

Silva

Brittes

2015

J Braz. Soc. Mech. Sci. Eng.

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“…(17), (18) and (19), the rate of formation or destruction of the chemical species is taken as the lowest one between the values obtained from each model. It follows that Silva et al (2007) used this formulation in this work to simulate the combustion process of methane and air in a cylindrical chamber obtaining good results. At this way:…”

Section: The E-a (Eddy Breakup -Arrhenius) Chemical Reactions Modelmentioning

confidence: 99%

CFD analysis of the pulverized coal combustion processes in a 160 MWe tangentially-fired-boiler of a thermal power plant

Silva¹,

Indrusiak²,

Beskow³

2010

J. Braz. Soc. Mech. Sci. & Eng.

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“…The investigation in Silva et al (2007), which considered the same combustion chamber, provided the relative importance of the combustion kinetics by computing the Damköhler number, and found that the combustion process is governed by Arrhenius rates in the flame core and by Magnussen's rates in all the other regions. This formulation was also successfully employed in Silva et al (2007), Nieckele et al (2001) and Centeno et al (2013Centeno et al ( , 2014a.…”

Section: Combustion Kineticsmentioning

confidence: 99%

Um estudo numérico da influência da radiação sobre a turbulência em uma chama turbulenta 2D axissimétrica

Centeno

Santos

Silva³

et al. 2016

ete

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Abstract. This paper presents a study of the influence of thermal radiation on turbulence in the simulation of a turbulent, non-premixed methane-air flame. In such a problem, two aspects need to be considered for a precise evaluation of the thermal radiation: the turbulence-radiation interactions (TRI), and the radiative properties of the participating species, which are treated here with the weighted-sum-of-gray-gases (WSGG) model based on recently obtained correlations from HI-TEMP2010 database. The chemical reactions rates were considered as the minimum values between the Arrhenius and Eddy Break-Up rates. A twostep global reaction mechanism was employed, while the turbulence modeling was considered via Resumo. Este artigo apresenta um estudo da influência da radiação térmica sobre a turbulência através da simulação de uma chama turbulenta, não pré-misturada, de metano-ar. Neste problema dois aspectos precisam ser considerados para uma avaliação precisa da radiação térmica: interações turbulência-radiação (TRI) e as propriedades radiativas das espécies participantes, as quais são tratadas aqui com o modelo da soma ponderada de gases cinza (WSGG) baseado em correlações recentemente obtidas a partir do banco de dados espectrais HITEMP2010. As taxas das reações químicas foram consideradas como os menores valores entre as taxas de Arrhenius e de Eddy Break-Up. Um mecanismo de reação global de duas etapas foi empregado, enEste é um artigo de acesso aberto, licenciado por Creative Commons Atribuição 4.0 International (CC-BY 4.0), sendo permitidas reprodução, adaptação e distribuição desde que o autor e a fonte originais sejam creditados. 56

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Analysis of the Turbulent, Non-Premixed Combustion of Natural Gas in a Cylindrical Chamber With and Without Thermal Radiation

Cited by 38 publications

References 16 publications

Numerical simulations of the radiative transfer in a 2D axisymmetric turbulent non-premixed methane–air flame using up-to-date WSGG and gray-gas models

Numerical simulations of the radiative transfer in a 2D axisymmetric turbulent non-premixed methane–air flame using up-to-date WSGG and gray-gas models

CFD analysis of the pulverized coal combustion processes in a 160 MWe tangentially-fired-boiler of a thermal power plant

Um estudo numérico da influência da radiação sobre a turbulência em uma chama turbulenta 2D axissimétrica

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