The dilution effect on the extinction of wall diffusion flame

• Autorzy: Ghiti N.
• Języki publikacji: EN

Abstrakty

EN

The dynamic process of the interaction between a turbulent jet diffusion methane 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 examined. The interaction between the diffusion flame and the lateral wall was investigated for different distance between the wall and the central axes 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 rapid than the flame without dilution, when the nitrogen dilution rate increase the flame temperature decrease.

Słowa kluczowe

EN

flame; N2 Dilution; wall flame; infrared thermography; methane

PL

płomień; termografia w podczerwieni; metan; azot

• Wydawca: Wydawnictwo Instytutu Maszyn Przepływowych PAN ; Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archives of Thermodynamics
• Rocznik: 2014
• Tom: Vol. 35, no. 4
• Strony: 43--54
• Opis fizyczny: Bibliogr. 9 poz., il.

Twórcy

autor

Ghiti N.

• Laboratorie de Mecanique Avancie – LMA, USTHB, Elia, Bab-Ezzouar BP. 32, Alger, Algeria

Bibliografia

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• [2] Williams F.A.: A Review of flame extinction. Fire Safety J. 3(1981), 163–175.
• [3] Sarnacki B.G., Esposito G., Krauss R.H., Chelliah H.K.: Extinction limits and associated uncertainties of nonpremixed counter flow flames of methane, ethylene, propylene and n-butane in air. Combust. Flame, 159(2012), 3, 1026–1043.
• [4] Ji Ch., Dames E., Wang H., Egolfopoulos F.N.: Propagation and extinction of benzene and alkylated benzene flames. Combust. Flame, 159(2012), 4, 1426–1436.
• [5] Sun W., Uddi M., Sang Hee Won, Ombrello T., Carter C., Ju Y.: Kinetic effects of non-equilibrium plasma-assisted methane oxidation on diffusion flame extinction limits. Combust. Flame, 159(2012), 1, 221–229.
• [6] Juddoo M., Masri A.R.: High-speed OH-PLIF imaging of extinction and reignition in non-premixed flames with various levels of oxygenation. Combust. Flame, 158(2011), 5, 902–914.
• [7] Ding N., Arora R., Norconk M.,Lee S.Y.: Numerical investigation of diluent influence on flame extinction limits and emission characteristic of lean-premixed H2-CO (syngas) flames. Int. J. Hydrogen Energ. 36(2011), 3222–3231.
• [8] Ghiti N., Bentebiche A.A., Hanchi S.: Interaction entre une flamme de diffusion et une paroi verticale. In: Proc. X Colloque Interuniversitaire Franco-québécois sur la Thermique des Systèmes, Saguenay, 20-22 Jun 2011, 239–245.
• [9] Witze P.O.: A study of impinging axisymmetric turbulent flows: The wall jet, the radial jet, and opposing free jets. SAND74, 8257, 1975.

Uwagi

EN

The author wish to thank for the fully financial support from the research center for welding and metallurgical application URASM-CSC Annaba in Algeria.