Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 30075
Natural Flickering of Methane Diffusion Flames

Authors: K. R. V. Manikantachari, Vasudevan Raghavan, K. Srinivasan

Abstract:

Present study focuses on studying the oscillatory behavior of jet diffusion flames. At a particular jet exit velocity, the flames are seen to exhibit natural flickering. Initially the flickering process is not continuous. In this transition region as well as in the continuous flickering regime, the flickering displays multiple frequency oscillations. The response of the flame to the exit velocity profile of the burner is also studied using three types of burners. The entire range of natural flickering is investigated by capturing high speed digital images and processing them using a MATLAB code.

Keywords: Diffusion flames, Natural flickering, flickering frequency, intermittent flickering

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1061856

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1690

References:


[1] Albers BW, Agrawal AK. Schlieren analysis of an oscillating gas-jet diffusion flame. Combust Flame 1999; 119:84-94.
[2] Lingens A, Neemann K, Meyer J, Schreiber M. Instability of diffusion flames. Proc Combust Inst 1996; 26:1053-61.
[3] D. S. Chamberlin and A. Rose, First Symposium on Combustion, Ind. Eng. Chem. 20, 1013-1016 (1928).
[4] Kimura, Tenth Symposium (International) on Combustion, the Combustion Institute, Pittsburgh, Pa., 1965, pp. 1295-1300.
[5] Jizhao LI, Yang ZHANG, Fuel variability effect on flickering frequency of diffusion Flames. Front. Energy Power Eng. China 2009, 3(2): 134- 140.
[6] Hamidreza Gohari Darabkhani & Yang Zhang, Methane Diffusion Flame Dynamics at Elevated Pressures. Combust. Sci. and Tech., 182: 231-251, 2010.
[7] A. J. GRANT and J. M. JONES, Low-Frequency Diffusion Flame Oscillations, Combustion and Flame, 25, 153-160 (1975).
[8] Buckmaster l; Peters N (1986) The infinite candle and its stability-a paradigm for flickering diffusion flame. Twenty-First Syrnp. (Intern.) on Combustion/The Combustion Institute, 1829-1836.
[9] T. MAXWORTHY, The flickering candle: transition to a global oscillation in a thermal plume. J. Fluid Mech. (1999), vol. 390, pp. 297{323}.
[10] W.R. Quinn, Upstream nozzle shaping effects on near field flow in round turbulent free jets, European Journal of Mechanics B/Fluids 25 (2006) 279-(301).