Dilution Effect on the Extinction of Impinging Diffusion Flame with a Lateral Wall

Nadjib Ghiti^1, , Abed Alhalim Bentebbiche¹ and Ramzi Boulkroune¹

¹Institute of Mechanical Engineering, USTHB University of Science and Technology, Algiers, Algeria

Cite this paper:
Nadjib Ghiti, Abed Alhalim Bentebbiche and Ramzi Boulkroune. Dilution Effect on the Extinction of Impinging Diffusion Flame with a Lateral Wall. American Journal of Mechanical Engineering. 2013; 1(2):30-33. doi: 10.12691/ajme-1-2-2

Abstract

The dynamic process of the interaction between a turbulent jet methane diffusion flame and a lateral wall was experimentally studied. The evolution of the flame temperature field with the Nitrogen dilution of the methane jet flame was studied for 0.2N₂, 0.4N₂, 0.6N₂, 0.8N₂, the interaction between the diffusion flame and the lateral wall is characterized for different distance between the wall and the central axis of the jet flame, the dilution is found to play the central role in the flame extinction process. The flame response as the lateral wall approaches from infinity and the increasing of the dilution rate make the flame extinction more rapidly than the flame without dilution, when the nitrogen dilution rate increase the flame temperature decrease.

Keywords:
flame dilution impinging infrared thermography methane

This work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

Figures

References:

[1]	F. A. Williams, “Progress in Knowledge of Flamelet Structure and Extinction”, Progress in Energy and Combustion Science 26, 2000, pp. 657-682.
[2]	Williams, F. A. “A Review of Flame Extinction”, Fire Safety Journal 3,1981, pp. 163-175.
[3]	B.G. Sarnacki, G. Esposito, R.H. Krauss, H.K. Chelliah “Extinction limits and associated uncertainties of nonpremixed counter flow flames of methane, ethylene, propylene and n-butane in air”, Combust.Flame, 159(3), 1026-1043, 2012.
[4]	Chunsheng Ji, Enoch Dames, Hai Wang, Fokion N. Egolfopoulos “Propagation and extinction of benzene and alkylated benzene flames”, Combust. Flame, 159(3), 1070-1081, 2012.
[5]	Wenting Sun, Mruthunjaya Uddi, Sang Hee Won, Timothy Ombrello, Campbell Carter, Yiguang Ju “Kinetic effects of non-equilibrium plasma-assisted methane oxidation on diffusion flame extinction limits”,Combustion and Flame, 159(1), 221-229, 2012.
[6]	M. Juddoo, A.R. Masri, “High-speed OH-PLIF imaging of extinction and re-ignition in non-premixed flames with various levels of oxygenation”, Combustion and Flame, 158(5), 902-914, 2011.
[7]	N. Ding, R. Arora, M. Norconk, S.Y.Lee, “Numerical investigation of diluent influence on flame extinction limits and emission characteristic of lean-premixed H2-CO (syngas) flames”, international journal of hydrogen energy, 36, 3222-3231, 2011.
[8]	N. Ghiti, A.A. Bentebiche, S. Hanchi, Interaction entre une flamme de diffusion et une paroi verticale, Xème Colloque Interuniversitaire Franco-québécois sur la Thermique des Systèmes, Saguenay, pp. 239-245, 2011.
[9]	P.O. Witze, “A study of impinging axisymmetric turbulent flows: the wall jet, the radial jet, and opposing free jets”, SAND74- pp. 8257, 1975.