The Effect Of Elevated Pressure On Soot Formation In A Laminar Jet Diffusion Flame
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Author | : Laura Lynne McCrain |
Publisher | : |
Total Pages | : 69 |
Release | : 2003 |
Genre | : |
ISBN | : |
Download The Effect of Elevated Pressure on Soot Formation in a Laminar Jet Diffusion Flame Book in PDF, Epub and Kindle
Keywords: diffusion flame, high pressure, soot formation.
Author | : |
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Total Pages | : |
Release | : 2003 |
Genre | : |
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Download The Effect of Elevated Pressure on Soot Formation in a Laminar Jet Diffusion Flame Book in PDF, Epub and Kindle
Soot volume fraction (f[subscript sv]) is measured quantitatively in a laminar diffusion flame at elevated pressures up to 25 atmospheres as a function of fuel type in order to gain a better understanding of the effects of pressure on the soot formation process. Methane and ethylene are used as fuels; methane is chosen since it is the simplest hydrocarbon while ethylene represents a larger hydrocarbon with a higher propensity to soot. Soot continues to be of interest because it is a sensitive indicator of the interactions between combustion chemistry and fluid mechanics and a known pollutant. To examine the effects of increased pressure on soot formation, Laser Induced Incandescence (LII) is used to obtain the desired temporally and spatially resolved, instantaneous f[subscript sv] measurements as the pressure is incrementally increased up to 25 atmospheres. The effects of pressure on the physical characteristics of the flame are also observed. A laser light extinction method that accounts for signal trapping and laser attenuation is used for calibration that results in quantitative results. The local peak f[subscript sv] is found to scale with pressure as p[superscript 1.2] for methane and p[superscript 1.7] for ethylene.
Author | : |
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Total Pages | : 5 |
Release | : 1885* |
Genre | : Railroads |
ISBN | : |
Download Reponse a une adresse de la Chambre des Communes en date du 6 Février 1885 Book in PDF, Epub and Kindle
Author | : L. L. McCrain |
Publisher | : |
Total Pages | : |
Release | : 2003 |
Genre | : |
ISBN | : |
Download Effects of Elevated Pressure on Soot Formation in Laminar Diffusion Flames Book in PDF, Epub and Kindle
Author | : |
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Total Pages | : |
Release | : 2004 |
Genre | : |
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Download Soot Formation in Laminar Jet Diffusion Flames at Elevated Pressures Book in PDF, Epub and Kindle
Author | : Adel Maurice Iskander |
Publisher | : |
Total Pages | : 440 |
Release | : 1987 |
Genre | : Flame |
ISBN | : |
Download Effect of Pressure on Soot Formation in Laminar Diffusion Flames Book in PDF, Epub and Kindle
Author | : Chul Han Kim |
Publisher | : |
Total Pages | : 408 |
Release | : 2005 |
Genre | : |
ISBN | : |
Download Effects of Pressure on the Mechanisms of Soot Formation and Oxidation in Laminar Diffusion Flames Book in PDF, Epub and Kindle
Author | : Guozheng Lin |
Publisher | : |
Total Pages | : 568 |
Release | : 1996 |
Genre | : Flame |
ISBN | : |
Download Hydrodynamic Effects on Soot Formation in Laminar Hydrocarbon-fueled Diffusion Flames Book in PDF, Epub and Kindle
Author | : Peter Bradford Sunderland |
Publisher | : |
Total Pages | : 262 |
Release | : 1995 |
Genre | : |
ISBN | : |
Download Soot Formation in Laminar Jet Diffusion Flames Book in PDF, Epub and Kindle
Author | : Decio S. (Decio Santos) Bento |
Publisher | : Library and Archives Canada = Bibliothèque et Archives Canada |
Total Pages | : 158 |
Release | : 2005 |
Genre | : Combustion |
ISBN | : 9780494024430 |
Download Soot Formation in Propane-air Laminar Diffusion Flames at Elevated Pressures [microform] Book in PDF, Epub and Kindle
Laminar axisymmetric propane air diffusion flames were studied at pressures 0.1 to 0.725 MPa (1 to 7.25 atm). To investigate the effect of pressure on soot formation, radially resolved soot temperatures and soot volume fractions were deduced from soot radiation emission scans collected at various pressures using spectral soot emission (SSE). Overall flame stability was quite good as judged by the naked eye. Flame heights varied by 15% and flame axial diameters decreased by 30% over the entire pressure range.Analysis of temperature sensitivity to variations in E lambda(m) revealed that a change in E lambda(m) of +/-20% produced a change in local temperature values of about 75 to 100 K or about 5%.Temperatures decreased and soot concentration increased with increased pressure. More specifically, the peak soot volume fraction showed a power law dependence, fv ∝ Pn where n = 2.0 over the entire pressure range. The maximum integrated soot volume fraction also showed a power law relationship with pressure, f ̄v ∝ Pn where n = 3.4 for 1 ≤ P ≤ 2 atm and n = 1.4 for 2 ≤ P ≤ 7.25 atm. The percentage of fuel carbon converted to soot increased with pressure at a rate, etas ∝ Pn where n = 3.3 and n = 1.1 for 1 ≤ P ≤ 2 atm and 2 ≤ P ≤ 7.25 atm respectively.