Implementation of two-equation soot flamelet models for laminar diffusion flames

Carbonell, Daniel; Oliva, A.; Segarra, Carlos David Pérez

doi:10.1016/j.combustflame.2008.12.003

Cited by 38 publications

(14 citation statements)

References 28 publications

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“…The flamelet library is generated using a full chemical kinetic scheme consisting of 70 species and 463 reactions [43]. The enthalpy defect parameterization is introduced by using the methodology described by Carbonel et al [44]. Statistical moments for a scalar quantity, 4, tabulated in the flamelet library as can then be computed by using a joint pdf of the mixture fraction, scalar dissipation rate, and enthalpy defect parameter [45].…”

Section: Flow Field Modelmentioning

confidence: 99%

Influence of turbulence–radiation interactions in laboratory-scale methane pool fires

Consalvi

2012

International Journal of Thermal Sciences

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Section: Flow Field Modelmentioning

confidence: 99%

Influence of turbulence–radiation interactions in laboratory-scale methane pool fires

Consalvi

2012

International Journal of Thermal Sciences

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“…The goal was to establish the baseline accuracy of a flamelet model designed for engineering that incorporates both soot and detailed treatment of radiation in a manner that complements Carbonell et al [111], Watanabe et al [112] and Chan et al [113].…”

Section: Les Of the Ethylene-air Non-premixed Jet Flamementioning

confidence: 99%

Understanding and predicting soot generation in turbulent non-premixed jet flames.

Wang

Kook²,

Doom³

et al. 2010

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This report documents the results of a project funded by DoD's Strategic Environmental Research and Development Program (SERDP) on the science behind development of predictive models for soot emission from gas turbine engines. Measurements of soot formation were performed in laminar flat premixed flames and turbulent non-premixed jet flames at 1 atm pressure and in turbulent liquid spray flames under representative conditions for takeoff in a gas turbine engine. The laminar flames and open jet flames used both ethylene and a prevaporized JP-8 surrogate fuel composed of n-dodecane and m-xylene. The pressurized turbulent jet flame measurements used the JP-8 surrogate fuel and compared its combustion and sooting characteristics to a world-average JP-8 fuel sample. The pressurized jet flame measurements demonstrated that the surrogate was representative of JP-8, with a somewhat higher tendency to soot formation. The premixed flame measurements revealed that flame temperature has a strong impact on the rate of soot nucleation and particle coagulation, but little sensitivity in the overall trends was found with different fuels. An extensive array of non-intrusive optical and laser-based measurements was performed in turbulent non-premixed jet flames established on specially designed piloted burners. Soot concentration data was collected throughout the flames, together with instantaneous images showing the relationship between soot and the OH radical and soot and PAH. A detailed chemical kinetic mechanism for ethylene combustion, including fuel-rich chemistry and benzene formation steps, was compiled, validated, and reduced. The reduced ethylene mechanism was incorporated into a high-fidelity LES code, together with a momentbased soot model and models for thermal radiation, to evaluate the ability of the chemistry and soot models to predict soot formation in the jet diffusion flame. The LES results highlight the importance of including an optically-thick radiation model to accurately predict gas temperatures and thus soot formation rates. When including such a radiation model, the LES model predicts mean soot concentrations within 30% in the ethylene jet flame. 3This page left intentionally blank.

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“…Mass transfer occurs only between zones that are in direct contact with each other. Equations (25) to (36) explain the mechanism of mass transfer between zones. Thus, the mole tran,(j,i) value indicates the moles transferred between the j th and i th zones.…”

Section: Mass Transfermentioning

confidence: 99%

“…In addition to the spray characteristics, experiment-based correlations have been used to estimate exhaust emissions. Typically two equation models are used for soot prediction [25] and the Zeldovich model is used to estimate NOx exhaust [26].…”

Section: Introductionmentioning

confidence: 99%

Multi-zone model for diesel engine simulation based on chemical kinetics mechanism

Neshat

Honnery

Saray

2017

Applied Thermal Engineering

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Implementation of two-equation soot flamelet models for laminar diffusion flames

Cited by 38 publications

References 28 publications

Influence of turbulence–radiation interactions in laboratory-scale methane pool fires

Influence of turbulence–radiation interactions in laboratory-scale methane pool fires

Understanding and predicting soot generation in turbulent non-premixed jet flames.

Multi-zone model for diesel engine simulation based on chemical kinetics mechanism

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