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Soot Formation In Hydrocarbon Air Laminar Jet Diffusion Flames Nasa Cr 202549 Mar 31 1997
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Book Synopsis Soot Formation In Hydrocarbon/Air Laminar Jet Diffusion Flames... NASA-CR-202549... Mar. 31, 1997 by : United States. National Aeronautics and Space Administration
Download or read book Soot Formation In Hydrocarbon/Air Laminar Jet Diffusion Flames... NASA-CR-202549... Mar. 31, 1997 written by United States. National Aeronautics and Space Administration and published by . This book was released on 1998* 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 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:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721129454 Total Pages :110 pages Book Rating :4.1/5 (294 download)
Book Synopsis Flow/Soot-Formation Interactions in Nonbuoyant Laminar Diffusion Flames by : National Aeronautics and Space Administration (NASA)
Download or read book Flow/Soot-Formation Interactions in Nonbuoyant Laminar Diffusion Flames written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-15 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the final report of a research program considering interactions between flow and soot properties within laminar diffusion flames. Laminar diffusion flames were considered because they provide model flame systems that are far more tractable for theoretical and experimental studies than more practical turbulent diffusion flames. In particular, understanding the transport and chemical reaction processes of laminar flames is a necessary precursor to understanding these processes in practical turbulent flames and many aspects of laminar diffusion flames have direct relevance to turbulent diffusion flames through application of the widely recognized laminar flamelet concept of turbulent diffusion flames. The investigation was divided into three phases, considering the shapes of nonbuoyant round laminar jet diffusion flames in still air, the shapes of nonbuoyant round laminar jet diffusion flames in coflowing air, and the hydrodynamic suppression of soot formation in laminar diffusion flames. Dai, Z. and Lin, K.-C. and Sunderland, P. B. and Xu, F. and Faeth, G. M. Glenn Research Center NAG3-661
Book Synopsis Soot Formation in Combustion by : Henning Bockhorn
Download or read book Soot Formation in Combustion written by Henning Bockhorn and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 595 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soot Formation in Combustion represents an up-to-date overview. The contributions trace back to the 1991 Heidelberg symposium entitled "Mechanism and Models of Soot Formation" and have all been reedited by Prof. Bockhorn in close contact with the original authors. The book gives an easy introduction to the field for newcomers, and provides detailed treatments for the specialists. The following list of contents illustrates the topics under review:
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 Effect of Chlorine on Soot Formation in Laminar Hydrocarbon Diffusion-flames by : Venkatesh B. Shyam
Download or read book Effect of Chlorine on Soot Formation in Laminar Hydrocarbon Diffusion-flames written by Venkatesh B. Shyam and published by . This book was released on 1992 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 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.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721281633 Total Pages :32 pages Book Rating :4.2/5 (816 download)
Book Synopsis Laminar Premixed and Diffusion Flames (Ground-Based Study) by : National Aeronautics and Space Administration (NASA)
Download or read book Laminar Premixed and Diffusion Flames (Ground-Based Study) written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-19 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ground-based studies of soot processes in laminar flames proceeded in two phases, considering laminar premixed flames and laminar diffusion flames, in turn. The test arrangement for laminar premixed flames involved round flat flame burners directed vertically upward at atmospheric pressure. The test arrangement for laminar jet diffusion flames involved a round fuel port directed vertically upward with various hydrocarbon fuels burning at atmospheric pressure in air. In both cases, coflow was used to prevent flame oscillations and measurements were limited to the flame axes. The measurements were sufficient to resolve soot nucleation, growth and oxidation rates, as well as the properties of the environment needed to evaluate mechanisms of these processes. The experimental methods used were also designed to maintain capabilities for experimental methods used in corresponding space-based experiments. This section of the report will be limited to consideration of flame structure for both premixed and diffusion flames. Dai, Z. and El-Leathy, A. M. and Lin, K.-C. and Sunderland, P. B. and Xu, F. and Faeth, G. M. and Urban, D. L. (Technical Monitor) and Yuan, Z.-G. (Technical Monitor) Glenn Research Center
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:
Author :Decio S. (Decio Santos) Bento Publisher :Library and Archives Canada = Bibliothèque et Archives Canada ISBN 13 :9780494024430 Total Pages :158 pages Book Rating :4.0/5 (244 download)
Book Synopsis Soot Formation in Propane-air Laminar Diffusion Flames at Elevated Pressures [microform] by : Decio S. (Decio Santos) Bento
Download or read book Soot Formation in Propane-air Laminar Diffusion Flames at Elevated Pressures [microform] written by Decio S. (Decio Santos) Bento and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2005 with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Soot Formation in Laminar Diffusion Flames by : L. Alan Jarnagin
Download or read book Soot Formation in Laminar Diffusion Flames written by L. Alan Jarnagin and published by . This book was released on 1958 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High-pressure Soot Formation and Diffusion Flame Extinction Characteristics of Gaseous and Liquid Fuels by : Ahmet Emre Karatas
Download or read book High-pressure Soot Formation and Diffusion Flame Extinction Characteristics of Gaseous and Liquid Fuels written by Ahmet Emre Karatas and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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