Evaluation of radiation modeling approaches for non-premixed flamelets considering a laminar methane air flame

Messig, Danny; Hunger, Franziska; Keller, J.; Hasse, Christian

doi:10.1016/j.combustflame.2012.10.009

Cited by 27 publications

(8 citation statements)

References 27 publications

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“…10. Neglecting radiation overpredicts the temperature of the methaneeair flame significantly showing that radiation needs to be considered, which is consistent with previous findings [2,6,7]. Furthermore, OTM/RADCAL yields reasonable agreement with the experimental data.…”

Section: Results For the Methaneeair Flamesupporting

confidence: 91%

“…It was previously investigated by several groups [2,6,7]. Radiation was found to be important but all groups used the simple OTM/ RADCAL radiation modeling approach.…”

Section: Results For the Methaneeair Flamementioning

confidence: 98%

“…It is a fuel rich, CO 2 -diluted inverse diffusion flame. The laminar methaneeair flame is a standard combustion benchmark flame previously investigated by many groups [2,6,7].…”

Section: Resultsmentioning

confidence: 99%

“…Thus, simple radiation modeling assuming an optically thin gas and a fully gray medium failed to predict flame temperatures correctly [4]. However, the same numerical and modeling setup was shown to be suitable for a geometrically similar laminar methaneeair flame [2,6,7].…”

Section: Introductionmentioning

confidence: 90%

“…2.1, details are given in Refs. [3,7] with respect to the general transport equations and the diffusion modeling. Further, the radiation modeling is described in detail in Sec.…”

Section: Mathematical Descriptionmentioning

confidence: 99%

See 4 more Smart Citations

Detailed radiation modeling of a partial-oxidation flame

Garten

Hunger

Messig

et al. 2015

International Journal of Thermal Sciences

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Section: Results For the Methaneeair Flamesupporting

confidence: 91%

“…It was previously investigated by several groups [2,6,7]. Radiation was found to be important but all groups used the simple OTM/ RADCAL radiation modeling approach.…”

Section: Results For the Methaneeair Flamementioning

confidence: 98%

“…It is a fuel rich, CO 2 -diluted inverse diffusion flame. The laminar methaneeair flame is a standard combustion benchmark flame previously investigated by many groups [2,6,7].…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 90%

“…2.1, details are given in Refs. [3,7] with respect to the general transport equations and the diffusion modeling. Further, the radiation modeling is described in detail in Sec.…”

Section: Mathematical Descriptionmentioning

confidence: 99%

See 3 more Smart Citations

Detailed radiation modeling of a partial-oxidation flame

Garten

Hunger

Messig

et al. 2015

International Journal of Thermal Sciences

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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

Self Cite

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A 5-D Implementation of FGM for the Large Eddy Simulation of a Stratified Swirled Flame with Heat Loss in a Gas Turbine Combustor

Donini

Bastiaans

Oijen

et al. 2016

Flow Turbulence Combust

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Numerical simulations are foreseen to provide a tremendous increase in gas-turbine burners efficiency in the near future. Modern developments in numerical schemes, turbulence models and the consistent increase of computing power allow Large Eddy Simulation (LES) to be applied to real cold flow industrial applications. However, the detailed simulation of the gas-turbine combustion process remains still prohibited because of its enormous computational cost. Several numerical models have been developed in order to reduce the costs of flame simulations for engineering applications. In this paper, the Flamelet-Generated Manifold (FGM) chemistry reduction technique is implemented and progressively extended for the inclusion of all the combustion features that are typically observed in stationary gas-turbine combustion. These consist of stratification effects, heat loss and turbulence. Three control variables are included for the chemistry representation: the reaction evolution is described by the reaction progress variable, the heat loss is described by the enthalpy and the stratification effect is expressed by the mixture fraction. The interaction between chemistry and turbulence is considered through a presumed beta-shaped probability density function (PDF) approach, which is considered for progress variable and mixture fraction, finally attaining a 5-D manifold. The application of FGM in combination with heat loss, fuel stratification and turbulence has never been studied in literature. To this aim, a highly turbulent and swirling flame in a gas turbine combustor is computed by means of the present 5-D FGM implementation coupled to an LES turbulence model, and the results are compared with experimental data. In general, the model gives a rather good agreement with experimental data. It is shown that the inclusion of heat loss strongly enhances the temperature predictions in the whole burner and leads to greatly improved NO predictions. The use of FGM as a combustion model shows that combustion features at gas turbine conditions can be satisfactorily reproduced with a reasonable computational effort. The implemented combustion model retains most of the physical accuracy of a detailed simulation while drastically reducing its computational time, paving the way for new developments of alternative fuel usage in a cleaner and more efficient combustion.

show abstract

Evaluation of radiation modeling approaches for non-premixed flamelets considering a laminar methane air flame

Cited by 27 publications

References 27 publications

Detailed radiation modeling of a partial-oxidation flame

Detailed radiation modeling of a partial-oxidation flame

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

A 5-D Implementation of FGM for the Large Eddy Simulation of a Stratified Swirled Flame with Heat Loss in a Gas Turbine Combustor

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