Modeling MILD combustion with flamelet-generated manifolds

Onderzoeksoutput: Bijdrage aan congresAbstractAcademic

Uittreksel

MILD combustion has the potential to deliver high thermal efficiency with low levels of pollutant emission. In MILD combustion systems a high degree of preheating of the reactants is coupled with a high degree of dilution. Since the temperature of the reactants is above the self-ignition temperature, a complex interplay between turbulent mixing, molecular transport and chemical kinetics occurs. The presence of thin reaction layers in MILD combustion makes the use of flamelet-based models such as FGM very attractive. In this work, modeling self-ignition with FGM under MILD conditions is investigated focusing on methane-carbon dioxide fuel mixtures. The influence of carbon dioxide level on ignition behavior is investigated, which is relevant for understanding MILD combustion behavior of biogas. Furthermore, the effect of the choice of progress variable is discussed and an automatic procedure to optimize the progress variable definition is presented.
Originele taal-2Engels
StatusGepubliceerd - 7 mei 2019
Evenement17th International Conference on Numerical Combustion - Aachen, Duitsland
Duur: 5 mei 20198 mei 2019
Congresnummer: 17
https://nc19.itv.rwth-aachen.de/

Congres

Congres17th International Conference on Numerical Combustion
Verkorte titelICNC
LandDuitsland
StadAachen
Periode5/05/198/05/19
Internet adres

Vingerafdruk

Ignition
Functionally graded materials
Carbon dioxide
Preheating
Biogas
Reaction kinetics
Dilution
Methane
Temperature
Hot Temperature

Citeer dit

van Oijen, J., & Vasavan, A. (2019). Modeling MILD combustion with flamelet-generated manifolds. Abstract van 17th International Conference on Numerical Combustion, Aachen, Duitsland.
van Oijen, Jeroen ; Vasavan, Aromal. / Modeling MILD combustion with flamelet-generated manifolds. Abstract van 17th International Conference on Numerical Combustion, Aachen, Duitsland.
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Modeling MILD combustion with flamelet-generated manifolds. / van Oijen, Jeroen; Vasavan, Aromal.

2019. Abstract van 17th International Conference on Numerical Combustion, Aachen, Duitsland.

Onderzoeksoutput: Bijdrage aan congresAbstractAcademic

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AU - van Oijen, Jeroen

AU - Vasavan, Aromal

PY - 2019/5/7

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N2 - MILD combustion has the potential to deliver high thermal efficiency with low levels of pollutant emission. In MILD combustion systems a high degree of preheating of the reactants is coupled with a high degree of dilution. Since the temperature of the reactants is above the self-ignition temperature, a complex interplay between turbulent mixing, molecular transport and chemical kinetics occurs. The presence of thin reaction layers in MILD combustion makes the use of flamelet-based models such as FGM very attractive. In this work, modeling self-ignition with FGM under MILD conditions is investigated focusing on methane-carbon dioxide fuel mixtures. The influence of carbon dioxide level on ignition behavior is investigated, which is relevant for understanding MILD combustion behavior of biogas. Furthermore, the effect of the choice of progress variable is discussed and an automatic procedure to optimize the progress variable definition is presented.

AB - MILD combustion has the potential to deliver high thermal efficiency with low levels of pollutant emission. In MILD combustion systems a high degree of preheating of the reactants is coupled with a high degree of dilution. Since the temperature of the reactants is above the self-ignition temperature, a complex interplay between turbulent mixing, molecular transport and chemical kinetics occurs. The presence of thin reaction layers in MILD combustion makes the use of flamelet-based models such as FGM very attractive. In this work, modeling self-ignition with FGM under MILD conditions is investigated focusing on methane-carbon dioxide fuel mixtures. The influence of carbon dioxide level on ignition behavior is investigated, which is relevant for understanding MILD combustion behavior of biogas. Furthermore, the effect of the choice of progress variable is discussed and an automatic procedure to optimize the progress variable definition is presented.

M3 - Abstract

ER -

van Oijen J, Vasavan A. Modeling MILD combustion with flamelet-generated manifolds. 2019. Abstract van 17th International Conference on Numerical Combustion, Aachen, Duitsland.