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Effects of Flow Excitation on the Nitrogen Oxide Emission of a Non-Premixed Flame  

이기만 (전남도립남도대학 기계자동차과)
Publication Information
Fire Science and Engineering / v.18, no.2, 2004 , pp. 34-40 More about this Journal
Abstract
The effects of external flow excitation with various frequencies and amplitudes on the flame behavior and pollution emission characteristics from a laminar jet flame are experimentally investigated. Measurements of $NO_x$ emission indices ($EINO_x$), performed in vertical lifted flame like turbulent with various exciting amplitude at a constant resonance frequency, have been conducted. It was also conducted to investigate the effects of excited frequency at a constant exciting amplitude on $NO_x$ emissions with a various frequency ranged 0 Hz to 2 KHz. From the vertical lifted turbulent flame of the excited jet with resonance frequency by strong excitation was shown that the dependence of $NO_x$ emission could be categorized into three groups Group I of long flame length with high disturbances yielding high $NO_x$ emission, Group II of intermediate flame length and relative narrow flame volume with low disturbance yielding low $NO_x$ emission and Group III of long flame length and large flame volume with high time ＆ space disturbances behaviour yielding high $NO_x$ emission.
Keywords
Flow excitation; $EINO_x$; Resonance frequency; Excited amplitude; Lifted flame;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 T. F. Fric, 'Effects of Fuel-air Unmixdness on $NO_x$ Emissions', J. of Prop. and Power, Vol. 9, pp.708-713(1993)   DOI   ScienceOn
2 S. R. Turns and J. A. Lovett, 'Measurements of Oxides of Nitrogen Emissions from Turbulent Propane Jet Diffusion Flames', Combustion Science and Technology, Vol. 66, pp.233-249(1989)   DOI   ScienceOn
3 O. Delabroy, 'A Study of $NO_x$, Reduction by Acoustic Excitation in a Liquid Fueled Burner', Combust. Sci. and Tech., Vol. 119, pp.397-408(1996)   DOI   ScienceOn
4 K. C. Smyth, J. E. Harrington, and W. M. Pitts, 'Greatly Enhanced Soot Scattering in Flickering $CH_4$/air Diffusion Flames', Combustion and Science, Vol. 95, pp.229-239(1993)
5 C. T. Bowman, 'Control of Combustion Generated Nitrogen Oxide Emissions ; Technology Driven by Regulation', 24th Sym. (Int.) on Combustion, pp.859-878(1992)
6 Ph. Meunier, M. Costa, and M. G. Carvlho, 'On $NO_x$, Emission from Turbulent Propane Diffusion Flame', Combustion and Flame, Vol. 112, pp.221-230(1998)   DOI   ScienceOn
7 Y. C. Chao, T. Yuan, and C. S, Tseng, 'Effects of Flame Lifting and Acoustic Excitation on the Reduction of $NO_x$, Emissions', Combustion Science and Technology, Vol. 113-114, pp.49-65(1996)
8 K. M. Lee, S. K. Oh, and J. Park, 'A Visual Investigation of Coherent Structure Behaviour under Tone-excited Laminar Non-premixed Jet Flame', KSME(B), Vol. 27, No. 3, pp.275-285(2003)   과학기술학회마을   DOI   ScienceOn