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Title: Analysis of flame surface density measurements in turbulent premixed combustion

Abstract

In premixed turbulent combustion, reaction rates can be estimated from the flame surface density. This parameter, which measures the mean flame surface area available per unit volume, may be obtained from algebraic expressions or by solving a transport equation. In this study, detailed measurements were performed on a Bunsen-type burner fed with methane/air mixtures in order to determine the local flame surface density experimentally. This burner, located in a high-pressure combustion chamber, allows investigation of turbulent premixed flames under various flow, mixture, and pressure conditions. In the present work, equivalence ratio was varied from 0.6 to 0.8 and pressure from 0.1 to 0.9 MPa. Flame front visualizations by Mie scattering laser tomography are used to obtain experimental data on the instantaneous flame front dynamics. The exact equation given by Pope is used to obtain flame surface density maps for different flame conditions. Some assumptions are made in order to access three-dimensional information from our two-dimensional experiments. Two different methodologies are proposed and tested in term of global mass balance (what enters compared to what is burned). The detailed experimental flame surface data provided for the first time in this work should progressively allow improvement of turbulent premixed flame modeling approaches.more » (author)« less

Authors:
 [1]; ;  [2];  [3]
  1. Institut PRISME, Universite d'Orleans, 45072 Orleans (France)
  2. Institut de Combustion, Aerothermique, Reactivite et Environnement, Centre National de la Recherche Scientifique, 45071 Orleans (France)
  3. Laboratoire E.M2.C, Centre National de la Recherche Scientifique, Ecole Centrale Paris, 92295 Chatenay-Malabry (France)
Publication Date:
OSTI Identifier:
21147119
Resource Type:
Journal Article
Journal Name:
Combustion and Flame
Additional Journal Information:
Journal Volume: 156; Journal Issue: 3; Other Information: Elsevier Ltd. All rights reserved; Journal ID: ISSN 0010-2180
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; FLAMES; COMBUSTION; PRESSURE RANGE KILO PA; METHANE; MIXTURES; AIR; COMBUSTION KINETICS; SURFACE AREA; BURNERS; TOMOGRAPHY; COMBUSTION CHAMBERS; MASS BALANCE; THREE-DIMENSIONAL CALCULATIONS; EQUATIONS; MAPS; SIMULATION; TURBULENCE; Turbulent premixed flames; Flame surface density

Citation Formats

Halter, Fabien, Chauveau, Christian, Goekalp, Iskender, and Veynante, Denis. Analysis of flame surface density measurements in turbulent premixed combustion. United States: N. p., 2009. Web. doi:10.1016/J.COMBUSTFLAME.2008.11.016.
Halter, Fabien, Chauveau, Christian, Goekalp, Iskender, & Veynante, Denis. Analysis of flame surface density measurements in turbulent premixed combustion. United States. doi:10.1016/J.COMBUSTFLAME.2008.11.016.
Halter, Fabien, Chauveau, Christian, Goekalp, Iskender, and Veynante, Denis. Sun . "Analysis of flame surface density measurements in turbulent premixed combustion". United States. doi:10.1016/J.COMBUSTFLAME.2008.11.016.
@article{osti_21147119,
title = {Analysis of flame surface density measurements in turbulent premixed combustion},
author = {Halter, Fabien and Chauveau, Christian and Goekalp, Iskender and Veynante, Denis},
abstractNote = {In premixed turbulent combustion, reaction rates can be estimated from the flame surface density. This parameter, which measures the mean flame surface area available per unit volume, may be obtained from algebraic expressions or by solving a transport equation. In this study, detailed measurements were performed on a Bunsen-type burner fed with methane/air mixtures in order to determine the local flame surface density experimentally. This burner, located in a high-pressure combustion chamber, allows investigation of turbulent premixed flames under various flow, mixture, and pressure conditions. In the present work, equivalence ratio was varied from 0.6 to 0.8 and pressure from 0.1 to 0.9 MPa. Flame front visualizations by Mie scattering laser tomography are used to obtain experimental data on the instantaneous flame front dynamics. The exact equation given by Pope is used to obtain flame surface density maps for different flame conditions. Some assumptions are made in order to access three-dimensional information from our two-dimensional experiments. Two different methodologies are proposed and tested in term of global mass balance (what enters compared to what is burned). The detailed experimental flame surface data provided for the first time in this work should progressively allow improvement of turbulent premixed flame modeling approaches. (author)},
doi = {10.1016/J.COMBUSTFLAME.2008.11.016},
journal = {Combustion and Flame},
issn = {0010-2180},
number = 3,
volume = 156,
place = {United States},
year = {2009},
month = {3}
}