Combustion modeling including heat loss using flamelet generated manifolds: a validation study in OpenFOAM

G.M. Ottino, A. Fancello, M. Falcone, R.J.M. Bastiaans, L.P.H. Goey, de

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)

Abstract

In numerical combustion applications the Flamelet Generated Manifolds technique (FGM) is being used at an increasingly number of occasions. This technique is an approach to reduce the chemistry efficiently and accurately. In the present work FGM is coupled to an OpenFOAM-based CFD solver. The multi-dimensional flame is described by an ensemble of 1D laminar flames generated through a 1D detailed chemistry solver, by taking into account both convective and diffusive contributions as well as the required source terms. The flame structure is parameterized as function of a progress variable and few controlling variables such as the variance of the progress variable and the enthalpy. A manifold, which collects the 1D flame properties, is built from the 1D flame solutions. For the progress variable and each controlling variable, a transport equation is added to the standard flow conservation equations. During runtime, key quantities are retrieved from the manifold by interpolation. The resulting FGM-CFD coupled code has two significant features: the ability to treat heat loss effects and the adoption of turbulence level to describe the flame structure, providing high quality numerical results within practical industrial configurations. In the present work, a backward-facing step configuration with a methane/air mixture is investigated. Some key aspects of reactive phenomena in standard industrial burner configurations, such as the recirculation region development and the flame stabilization, are considered here. Numerical simulations are performed comparing results with experiments available in literature. Both RANS and LES approaches are adopted: improvements with respect to prior available works are highlighted. Moreover, LES data, available for the first time within this configuration, are used to provide a deeper insight of turbulence/combustion interaction.
LanguageEnglish
Pages773-800
Number of pages28
JournalFlow, Turbulence and Combustion
Volume96
Issue number3
DOIs
StatePublished - Apr 2016

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Heat losses
flames
Computational fluid dynamics
Turbulence
heat
Methane
Fuel burners
Enthalpy
Conservation
Interpolation
Stabilization
charge flow devices
configurations
Computer simulation
Air
turbulence
chemistry
backward facing steps
conservation equations
Experiments

Cite this

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title = "Combustion modeling including heat loss using flamelet generated manifolds: a validation study in OpenFOAM",
abstract = "In numerical combustion applications the Flamelet Generated Manifolds technique (FGM) is being used at an increasingly number of occasions. This technique is an approach to reduce the chemistry efficiently and accurately. In the present work FGM is coupled to an OpenFOAM-based CFD solver. The multi-dimensional flame is described by an ensemble of 1D laminar flames generated through a 1D detailed chemistry solver, by taking into account both convective and diffusive contributions as well as the required source terms. The flame structure is parameterized as function of a progress variable and few controlling variables such as the variance of the progress variable and the enthalpy. A manifold, which collects the 1D flame properties, is built from the 1D flame solutions. For the progress variable and each controlling variable, a transport equation is added to the standard flow conservation equations. During runtime, key quantities are retrieved from the manifold by interpolation. The resulting FGM-CFD coupled code has two significant features: the ability to treat heat loss effects and the adoption of turbulence level to describe the flame structure, providing high quality numerical results within practical industrial configurations. In the present work, a backward-facing step configuration with a methane/air mixture is investigated. Some key aspects of reactive phenomena in standard industrial burner configurations, such as the recirculation region development and the flame stabilization, are considered here. Numerical simulations are performed comparing results with experiments available in literature. Both RANS and LES approaches are adopted: improvements with respect to prior available works are highlighted. Moreover, LES data, available for the first time within this configuration, are used to provide a deeper insight of turbulence/combustion interaction.",
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Combustion modeling including heat loss using flamelet generated manifolds: a validation study in OpenFOAM. / Ottino, G.M.; Fancello, A.; Falcone, M.; Bastiaans, R.J.M.; Goey, de, L.P.H.

In: Flow, Turbulence and Combustion, Vol. 96, No. 3, 04.2016, p. 773-800.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Combustion modeling including heat loss using flamelet generated manifolds: a validation study in OpenFOAM

AU - Ottino,G.M.

AU - Fancello,A.

AU - Falcone,M.

AU - Bastiaans,R.J.M.

AU - Goey, de,L.P.H.

PY - 2016/4

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T2 - Flow, Turbulence and Combustion

JF - Flow, Turbulence and Combustion

SN - 1386-6184

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ER -