Numerical simulations of a turbulent high-pressure premixed cooled jet flame with the flamelet generated manifolds technique

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Abstract

In the present paper, a computational analysis of a high pressure confined premixed turbulent methane/air jet flames with heat loss to the walls is presented. In this scope, chemistry is reduced by the use of the flamelet generated manifold (FGM) method and the fluid flow is modeled in an large eddy simulation (LES) and Reynolds-averaged Navier–Stokes (RANS) context. The reaction evolution is described by the reaction progress variable, the heat loss is described by the enthalpy and the turbulence effect on the reaction is represented by the progress variable variance. A generic lab scale burner for methane high-pressure (5 bar) high-velocity (40¿m/s at the inlet) preheated jet is adopted for the simulations, because of its gas-turbine relevant conditions. 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. Furthermore, the present analysis indicates that the physical and chemical processes controlling carbon monoxide (CO) emissions can be captured only by means of unsteady simulations.
LanguageEnglish
Pages071501-1/8
JournalJournal of Engineering for Gas Turbines and Power : Transactions of the ASME
Volume137
Issue number7
DOIs
StatePublished - 2015

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Heat losses
Gas turbines
Methane
Computer simulation
Large eddy simulation
Fuel burners
Carbon monoxide
Flow of fluids
Enthalpy
Turbulence
Air

Cite this

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title = "Numerical simulations of a turbulent high-pressure premixed cooled jet flame with the flamelet generated manifolds technique",
abstract = "In the present paper, a computational analysis of a high pressure confined premixed turbulent methane/air jet flames with heat loss to the walls is presented. In this scope, chemistry is reduced by the use of the flamelet generated manifold (FGM) method and the fluid flow is modeled in an large eddy simulation (LES) and Reynolds-averaged Navier–Stokes (RANS) context. The reaction evolution is described by the reaction progress variable, the heat loss is described by the enthalpy and the turbulence effect on the reaction is represented by the progress variable variance. A generic lab scale burner for methane high-pressure (5 bar) high-velocity (40¿m/s at the inlet) preheated jet is adopted for the simulations, because of its gas-turbine relevant conditions. 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. Furthermore, the present analysis indicates that the physical and chemical processes controlling carbon monoxide (CO) emissions can be captured only by means of unsteady simulations.",
author = "A. Donini and R.J.M. Bastiaans and {Oijen, van}, J.A. and {Goey, de}, L.P.H.",
year = "2015",
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language = "English",
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pages = "071501--1/8",
journal = "Journal of Engineering for Gas Turbines and Power : Transactions of the ASME",
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publisher = "American Society of Mechanical Engineers",
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TY - JOUR

T1 - Numerical simulations of a turbulent high-pressure premixed cooled jet flame with the flamelet generated manifolds technique

AU - Donini,A.

AU - Bastiaans,R.J.M.

AU - Oijen, van,J.A.

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

PY - 2015

Y1 - 2015

N2 - In the present paper, a computational analysis of a high pressure confined premixed turbulent methane/air jet flames with heat loss to the walls is presented. In this scope, chemistry is reduced by the use of the flamelet generated manifold (FGM) method and the fluid flow is modeled in an large eddy simulation (LES) and Reynolds-averaged Navier–Stokes (RANS) context. The reaction evolution is described by the reaction progress variable, the heat loss is described by the enthalpy and the turbulence effect on the reaction is represented by the progress variable variance. A generic lab scale burner for methane high-pressure (5 bar) high-velocity (40¿m/s at the inlet) preheated jet is adopted for the simulations, because of its gas-turbine relevant conditions. 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. Furthermore, the present analysis indicates that the physical and chemical processes controlling carbon monoxide (CO) emissions can be captured only by means of unsteady simulations.

AB - In the present paper, a computational analysis of a high pressure confined premixed turbulent methane/air jet flames with heat loss to the walls is presented. In this scope, chemistry is reduced by the use of the flamelet generated manifold (FGM) method and the fluid flow is modeled in an large eddy simulation (LES) and Reynolds-averaged Navier–Stokes (RANS) context. The reaction evolution is described by the reaction progress variable, the heat loss is described by the enthalpy and the turbulence effect on the reaction is represented by the progress variable variance. A generic lab scale burner for methane high-pressure (5 bar) high-velocity (40¿m/s at the inlet) preheated jet is adopted for the simulations, because of its gas-turbine relevant conditions. 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. Furthermore, the present analysis indicates that the physical and chemical processes controlling carbon monoxide (CO) emissions can be captured only by means of unsteady simulations.

U2 - 10.1115/1.4029099

DO - 10.1115/1.4029099

M3 - Article

VL - 137

SP - 071501-1/8

JO - Journal of Engineering for Gas Turbines and Power : Transactions of the ASME

T2 - Journal of Engineering for Gas Turbines and Power : Transactions of the ASME

JF - Journal of Engineering for Gas Turbines and Power : Transactions of the ASME

SN - 0742-4795

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