Experimental study of the stabilization process of a non-premixed flame via the destabilization analysis of the blue ring flame

doi:10.1016/J.EXPTHERMFLUSCI.2006.04.014

Title: Experimental study of the stabilization process of a non-premixed flame via the destabilization analysis of the blue ring flame

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Abstract

The flame stabilization phenomenon remains a crucial issue. The experimental study of flame stabilization behind a tulip-shaped flame-holder is addressed in this paper. The process leading to the transition between specific modes - the blue ring flame and the instable ring - of a non-premixed flame stabilized on a tulip-shaped bluff-body is detailed. The aim of this study is to provide an accurate description of the destabilization of specific combustion modes, which enables a further understanding of the entire stabilization mechanism. The aerodynamic and mixing fields are described by laser Doppler anemometry and concentration measurements by sampling probe respectively. The behaviour of shear layers developing at the wake and jet boundaries are characterized by means of a spectral analysis of the fluctuating radial velocity. Results show that the destabilization process is related to the intensification of hot gas recirculation, inducing an upheaval of the dynamical condition of stabilization and a transition of mixing phenomena. (author)

Authors:

Pinguet, Guillaume; Escudie, Dany ^[1]

Centre de Thermique de Lyon (CETHIL) UMR 5008 CNRS-INSA-UCBL, INSA de Lyon, 20 av. A. Einstein, 69621 Villeurbanne cedex (France)

Publication Date:: Sun Apr 15 00:00:00 EDT 2007

OSTI Identifier:: 20864949

Resource Type:: Journal Article

Resource Relation:: Journal Name: Experimental Thermal and Fluid Science; Journal Volume: 31; Journal Issue: 5; Conference: MCS-4: 4. Mediterranean combustion symposium, Lisbon (Portugal), 6-10 Oct 2005; Other Information: Elsevier Ltd. All rights reserved

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; COMBUSTION KINETICS; FLAMES; STABILIZATION; RINGS; RADIAL VELOCITY; MIXING; LAYERS; SHEAR; JETS

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                    Pinguet, Guillaume, and Escudie, Dany. Experimental study of the stabilization process of a non-premixed flame via the destabilization analysis of the blue ring flame.  United States: N. p., 2007. 
        Web.  doi:10.1016/J.EXPTHERMFLUSCI.2006.04.014.

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                    Pinguet, Guillaume, & Escudie, Dany. Experimental study of the stabilization process of a non-premixed flame via the destabilization analysis of the blue ring flame.  United States.  doi:10.1016/J.EXPTHERMFLUSCI.2006.04.014.

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                    Pinguet, Guillaume, and Escudie, Dany. Sun .  
        "Experimental study of the stabilization process of a non-premixed flame via the destabilization analysis of the blue ring flame".  United States.  
        doi:10.1016/J.EXPTHERMFLUSCI.2006.04.014.

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@article{osti_20864949,

  title        = {Experimental study of the stabilization process of a non-premixed flame via the destabilization analysis of the blue ring flame},

  author       = {Pinguet, Guillaume and Escudie, Dany},

  abstractNote = {The flame stabilization phenomenon remains a crucial issue. The experimental study of flame stabilization behind a tulip-shaped flame-holder is addressed in this paper. The process leading to the transition between specific modes - the blue ring flame and the instable ring - of a non-premixed flame stabilized on a tulip-shaped bluff-body is detailed. The aim of this study is to provide an accurate description of the destabilization of specific combustion modes, which enables a further understanding of the entire stabilization mechanism. The aerodynamic and mixing fields are described by laser Doppler anemometry and concentration measurements by sampling probe respectively. The behaviour of shear layers developing at the wake and jet boundaries are characterized by means of a spectral analysis of the fluctuating radial velocity. Results show that the destabilization process is related to the intensification of hot gas recirculation, inducing an upheaval of the dynamical condition of stabilization and a transition of mixing phenomena. (author)},

  doi          = {10.1016/J.EXPTHERMFLUSCI.2006.04.014},

  journal      = {Experimental Thermal and Fluid Science},

  number       = 5,

  volume       = 31,

  place        = {United States},

  year         = {Sun Apr 15 00:00:00 EDT 2007},

  month        = {Sun Apr 15 00:00:00 EDT 2007}

}

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DOI: 10.1016/J.EXPTHERMFLUSCI.2006.04.014

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