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3D Numerical Simulation of a Laminar Experimental SWQ Burner with Tabulated Chemistry

Heinrich, A. and Ganter, S. and Kuenne, G. and Jainski, C. and Dreizler, A. and Janicka, J. (2018):
3D Numerical Simulation of a Laminar Experimental SWQ Burner with Tabulated Chemistry.
In: Flow Turbulence and Combustion, Springer, pp. 535-559, 100, (2), ISSN 1386-6184,
DOI: 10.1007/s10494-017-9851-9,
[Article]

Abstract

Flame-wall interaction (FWI) plays an important role in enclosed combustion systems. For avoiding the complexity of close to reality combustors, in this study an atmospheric premixed V-shaped flame interacting with an isothermal cold wall in a side wall quenching (SWQ) configuration is investigated. A stoichiometric methane/air mixture is used as fuel. A three-dimensional (3D) numerical simulation, which resolves all flow structures is combined with a tabulated chemistry approach (flamelet generated manifold, FGM). Results are compared with experimental data and two-dimensional simulations. The FGM approach is a suitable trade-off between computationally expensive detailed chemistry simulations and over simplified single step mechanisms. 2D simulations are used to investigate the influence of the uncertainty of the wall temperature, to show that the resolution in 3D is sufficient and that the influence of the flame thickening on the wall heat fluxes can be determined. Our results show that the 3D FGM approach is in close agreement to experimentally obtained flow and temperature fields. The dimensionless wall heat flux and P,clet number matches the expected values of 0.16 and 7, respectively. However, during FWI the measured CO mole fractions are not reproduced accurately showing that the transported variables in the present approach of tabulated chemistry do not recover premixed flame structures near walls.

Item Type: Article
Erschienen: 2018
Creators: Heinrich, A. and Ganter, S. and Kuenne, G. and Jainski, C. and Dreizler, A. and Janicka, J.
Title: 3D Numerical Simulation of a Laminar Experimental SWQ Burner with Tabulated Chemistry
Language: English
Abstract:

Flame-wall interaction (FWI) plays an important role in enclosed combustion systems. For avoiding the complexity of close to reality combustors, in this study an atmospheric premixed V-shaped flame interacting with an isothermal cold wall in a side wall quenching (SWQ) configuration is investigated. A stoichiometric methane/air mixture is used as fuel. A three-dimensional (3D) numerical simulation, which resolves all flow structures is combined with a tabulated chemistry approach (flamelet generated manifold, FGM). Results are compared with experimental data and two-dimensional simulations. The FGM approach is a suitable trade-off between computationally expensive detailed chemistry simulations and over simplified single step mechanisms. 2D simulations are used to investigate the influence of the uncertainty of the wall temperature, to show that the resolution in 3D is sufficient and that the influence of the flame thickening on the wall heat fluxes can be determined. Our results show that the 3D FGM approach is in close agreement to experimentally obtained flow and temperature fields. The dimensionless wall heat flux and P,clet number matches the expected values of 0.16 and 7, respectively. However, during FWI the measured CO mole fractions are not reproduced accurately showing that the transported variables in the present approach of tabulated chemistry do not recover premixed flame structures near walls.

Journal or Publication Title: Flow Turbulence and Combustion
Volume: 100
Number: 2
Publisher: Springer
Uncontrolled Keywords: FGM; Flame wall interaction; Laminar; Methane; SWQ
Divisions: 16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institute for Energy and Power Plant Technology (EKT)
16 Department of Mechanical Engineering > Institute of Reactive Flows and Diagnostics (RSM)
Date Deposited: 27 Mar 2019 06:19
DOI: 10.1007/s10494-017-9851-9
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