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The Effect Of Elevated Pressure On Soot Formation In A Laminar Jet Diffusion Flame
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Book Synopsis The Effect of Elevated Pressure on Soot Formation in a Laminar Jet Diffusion Flame by : Laura Lynne McCrain
Download or read book The Effect of Elevated Pressure on Soot Formation in a Laminar Jet Diffusion Flame written by Laura Lynne McCrain and published by . This book was released on 2003 with total page 69 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keywords: diffusion flame, high pressure, soot formation.
Book Synopsis The Effect of Elevated Pressure on Soot Formation in a Laminar Jet Diffusion Flame by :
Download or read book The Effect of Elevated Pressure on Soot Formation in a Laminar Jet Diffusion Flame written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Reponse a une adresse de la Chambre des Communes en date du 6 Février 1885 by :
Download or read book Reponse a une adresse de la Chambre des Communes en date du 6 Février 1885 written by and published by . This book was released on 1885* with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Elevated Pressure on Soot Formation in Laminar Diffusion Flames by : L. L. McCrain
Download or read book Effects of Elevated Pressure on Soot Formation in Laminar Diffusion Flames written by L. L. McCrain and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soot Formation in Laminar Jet Diffusion Flames at Elevated Pressures by :
Download or read book Soot Formation in Laminar Jet Diffusion Flames at Elevated Pressures written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hydrodynamic Effects on Soot Formation in Laminar Hydrocarbon-fueled Diffusion Flames by : Guozheng Lin
Download or read book Hydrodynamic Effects on Soot Formation in Laminar Hydrocarbon-fueled Diffusion Flames written by Guozheng Lin and published by . This book was released on 1996 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Pressure on Soot Formation in Laminar Diffusion Flames by : Adel Maurice Iskander
Download or read book Effect of Pressure on Soot Formation in Laminar Diffusion Flames written by Adel Maurice Iskander and published by . This book was released on 1987 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soot Formation in Laminar Jet Diffusion Flames by : Peter Bradford Sunderland
Download or read book Soot Formation in Laminar Jet Diffusion Flames written by Peter Bradford Sunderland and published by . This book was released on 1995 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Pressure on the Mechanisms of Soot Formation and Oxidation in Laminar Diffusion Flames by : Chul Han Kim
Download or read book Effects of Pressure on the Mechanisms of Soot Formation and Oxidation in Laminar Diffusion Flames written by Chul Han Kim and published by . This book was released on 2005 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soot Formation in Laminar Diffusion Flames by : eO L. Geulder
Download or read book Soot Formation in Laminar Diffusion Flames written by eO L. Geulder and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fuel Structure and Pressure Effects on the Formation of Soot Particles in Diffusion Flames by : Robert J. Santoro
Download or read book Fuel Structure and Pressure Effects on the Formation of Soot Particles in Diffusion Flames written by Robert J. Santoro and published by . This book was released on 1990 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Studies emphasizing the effects of fuel concentration and operating pressure on the formation of soot particles have been conducted in a series of laminar diffusion flames. These experiments have shown that fuel concentration has a measurable effect on the amount of soot formed in the flame. However, a simple, constant proportionality between the fuel concentration and soot volume fraction has not been found to apply for the range of flow conditions studied. This observation is believed to be a result of flame residence time and diffusion effects which mitigate the consequences of reduced initial fuel concentration. Comparisons with simple laminar diffusion flame models are currently being used to investigate the relationship between initial fuel concentration and local flame concentration fields. Similar studies of soot formation in laminar diffusion flames as a function of operating pressure have also been completed for ethene, ethane and propene fuel species. Keywords: Soot formation, Soot particles, Diffusion flames. (JES).
Book Synopsis A Fundamental Study of Soot Formation in Diffusion Flames by : Richard L. Axelbaum
Download or read book A Fundamental Study of Soot Formation in Diffusion Flames written by Richard L. Axelbaum and published by . This book was released on 1988 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781720608042 Total Pages :58 pages Book Rating :4.6/5 (8 download)
Book Synopsis Laminar Soot Processes (Lsp) by : National Aeronautics and Space Administration (NASA)
Download or read book Laminar Soot Processes (Lsp) written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final report of a research program considering the structure and the soot surface reaction properties of laminar nonpremixed (diffusion) flames. The study was limited to ground-based measurements of buoyant laminar jet diffusion flames at pressures of 0.1-1.0 atm. The motivation for the research is that soot formation in flames is a major unresolved problem of combustion science that influences the pollutant emissions, durability and performance of power and propulsion systems, as well as the potential for developing computational combustion. The investigation was divided into two phases considering the structure of laminar soot-containing diffusion flames and the soot surface reaction properties (soot surface growth and oxidation) of these flames, in turn. The first phase of the research addressed flame and soot structure properties of buoyant laminar jet diffusion flames at various pressures. The measurements showed that H, OH and O radical concentrations were generally in superequilibrium concentrations at atmospheric pressure but tended toward subequilibrium concentrations as pressures decreased. The measurements indicated that the original fuel decomposed into more robust compounds at elevated temperatures, such as acetylene (unless the original fuel was acetylene) and H, which are the major reactants for soot surface growth, and that the main effect of the parent fuel on soot surface growth involved its yield of acetylene and H for present test conditions. The second phase of the research addressed soot surface reaction properties, e.g., soot surface growth and surface oxidation. It was found that soot surface growth rates in both laminar premixed and diffusion flames were in good agreement, that these rates were relatively independent of fuel type, and that these rates could be correlated by the Hydrogen-Abstraction/Carbon-Addition (HACA) mechanisms of Colket and Hall (1994), Frenklach et al. (1990,1994), and Kazakov et al. (1995). It was also fou
Book Synopsis Soot Formation in Gaseous Laminar Diffusion Flames by : Changlie Wey
Download or read book Soot Formation in Gaseous Laminar Diffusion Flames written by Changlie Wey and published by . This book was released on 1984 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Detailed Studies of Soot Formation in Laminar Diffusion Flames for Application to Modeling Studies by :
Download or read book Detailed Studies of Soot Formation in Laminar Diffusion Flames for Application to Modeling Studies written by and published by . This book was released on 1996 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: An investigation of soot formation in laminar diffusion flames showed that soot particle surface growth under laminar diffusion flame conditions ceases because of the depletion of hydrocarbon species and not soot particle reactivity loss due to thermal aging of the particles. This result was obtained through direct species concentration measurements under well-controlled conditions, while the particle reactivity effects were calculated based on premixed flame results along with particle temperature/time information available from earlier laminar diffusion flame studies. Comparisons with a soot formation model which incorporated detailed chemistry effects showed good agreement in terms of predicted and measured species concentration and soot particle field evolution. In addition, a novel technique for measuring soot volume fraction was developed based on laser-induced incandescence and was successfully applied to similar laminar diffusion flame studies. This technique was extended to droplet and turbulent diffusion flame conditions where a two-dimensional imaging approach was employed to measure soot volume fraction. Finally, the complete data set from these studies was assembled in a form suitable for dissemination on computer diskettes throughout the research community for comparison with modeling efforts.
Book Synopsis Soot Formation in Laminar Diffusion Flames of Gas Mixtures by : Margaret Kathleen Bohan
Download or read book Soot Formation in Laminar Diffusion Flames of Gas Mixtures written by Margaret Kathleen Bohan and published by . This book was released on 2006 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the factors that effect soot formation is essential to development of predictive models and the design of combustion processes that reduce the formation of particulates. Synergistic effects in flames of gas mixtures, increases in soot volume fraction that are higher than would be expected based on the soot volume fractions in the pure gas flames, have been observed in previous studies. The two isomers of butane were chosen to eliminate changes in flame carbon content, mass flow rate, and adiabatic flame temperature that are normally encountered when comparing flames of pure gases to flames of gas mixtures, and which also effect soot formation. A co-flow annular burner and a line-of-sight attenuation apparatus were used to produce radially-resolved soot volume fraction measurements. The experimental results give further insight into the sooting propensities of isobutane and n-butane, as well as their effect soot formation in ethylene and methane flames.
Book Synopsis Effects of Fuel Preheat on Soot Formation in 1-G and 0-G Laminar Diffusion Flames by : Bogdan Konsur
Download or read book Effects of Fuel Preheat on Soot Formation in 1-G and 0-G Laminar Diffusion Flames written by Bogdan Konsur and published by . This book was released on 1997 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
