Detailed radiation modeling of a partial-oxidation flame

Garten, B.; Hunger, Franziska; Messig, Danny; Stelzner, Björn; Trimis, D.; Hasse, Christian

doi:10.1016/j.ijthermalsci.2014.07.022

Cited by 32 publications

(24 citation statements)

References 60 publications

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“…Interestingly, the WSGG model does not require the use of a reference state, since the coefficients are obtained from fitting emittance data for a range of thermodynamic conditions. This is one advantage that may explain the satisfactory accuracy demonstrated in [4,8,21] for non-isothermal, non-homogeneous problems, in spite of the inherent simplicity of the model.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of gas radiation heat transfer in a 2D axisymmetric geometry using the line-by-line integration and WSGG models

Centeno

Brittes

Ezekoye

2015

Journal of Quantitative Spectroscopy and Radiative Transfer

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Section: Introductionmentioning

confidence: 99%

Evaluation of gas radiation heat transfer in a 2D axisymmetric geometry using the line-by-line integration and WSGG models

Centeno

Brittes

Ezekoye

2015

Journal of Quantitative Spectroscopy and Radiative Transfer

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“…In general, the P1 model agrees well with the experimental data. As discussed in [17] this is due to the oxy-fuel conditions and therewith the occurence of optically denser regions. The temperature profiles exhibit similar trends as the Rayleigh ratio.…”

Section: Laminar Flamementioning

confidence: 94%

“…3.1, with further details given in [17,22,33]. The modeling approach for the turbulent flame is explained in Sec.…”

Section: Numerical Approachmentioning

confidence: 99%

“…As a second model, the P1 approximation [34] combined with the weighted sum of gray gases (WSGG) [21] using the weights from [24] is used. The latter has already been successfully applied in oxy-fuel combustion [17]. Laminar simulations are performed with an in-house solver [17,22,33] based on OpenFOAM R 2.1.…”

Section: Laminar Flamementioning

confidence: 99%

“…The latter has already been successfully applied in oxy-fuel combustion [17]. Laminar simulations are performed with an in-house solver [17,22,33] based on OpenFOAM R 2.1. The inner jet is assumed to have a Hagen-Poiseuille velocity profile and the coflow velocity is set to a block profile.…”

Section: Laminar Flamementioning

confidence: 99%

See 2 more Smart Citations

A Combined Experimental and Numerical Study of Laminar and Turbulent Non-piloted Oxy-fuel Jet Flames Using a Direct Comparison of the Rayleigh Signal

Hunger

Zulkifli

Williams

et al. 2015

Flow Turbulence Combust

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Implementation of the spectral line‐based weighted‐sum‐of‐gray‐gases model in the finite volume method for radiation modeling in internal combustion engines

Jurić

Coelho

Priesching

et al. 2022

Intl J of Energy Research

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Summary It is well‐known that the pollutant formation processes and temperature distribution in various combustion systems that operate at high temperatures are influenced by radiation heat transport. Detailed modeling of radiation transport in internal combustion (IC) engines demands additional computational power, and hence the calculation of radiation phenomenon is not commonly applied in IC engines. At the same time, current operating conditions in IC engines consider high temperatures and recirculation of exhaust gases that enhance gas radiation. Therefore, the application of radiation models is needed to increase the correctness of radiative absorption, combustion characteristics, and the formation of pollutant emissions. In this paper, the implementation and validation of the spectral line‐based weighted‐sum‐of‐gray‐gases (SLW) model for calculating soot and gas radiation are performed. The SLW model is implemented in the computational fluid dynamics code AVL FIRE by programable user routines. The radiative transfer equation was calculated employing the finite volume method applicable for multiprocessing, moving meshes, and a mesh rezone procedure required for IC engine modeling. The validation of the SLW model is performed on one‐dimensional geometric cases that include analytical results of radiation intensity, for which agreement within 10% of the relative error was achieved. Additionally, the SLW model is applied to compression ignition engine simulations, where the obtained results are compared with the measured pressure and concentrations of NO and soot emissions. The calculated heat losses through the wall boundary layer were around 12% of the total fuel energy, approximately 9.5% of the total fuel energy was lost due to the convective flow. 7%–8% of convection heat loss was due to the higher emission than absorption of participating CO2 and H2O gasses, and the rest are net soot losses. For the observed operating cases, the computational time is increased nearly double for SLW model than in the simulation without radiation. Finally, the results calculated using SLW indicate an improved agreement with the experimental mean pressure, temperature, soot, and NO concentrations compared to simulations without radiation.

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Detailed radiation modeling of a partial-oxidation flame

Cited by 32 publications

References 60 publications

Evaluation of gas radiation heat transfer in a 2D axisymmetric geometry using the line-by-line integration and WSGG models

Evaluation of gas radiation heat transfer in a 2D axisymmetric geometry using the line-by-line integration and WSGG models

A Combined Experimental and Numerical Study of Laminar and Turbulent Non-piloted Oxy-fuel Jet Flames Using a Direct Comparison of the Rayleigh Signal

Implementation of the spectral line‐based weighted‐sum‐of‐gray‐gases model in the finite volume method for radiation modeling in internal combustion engines

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