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Quantitative Measurement Of Oh Concentration With Laser Induced Predissociative Fluorescence In High Pressure Propane Flames
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Book Synopsis Quantitative Measurement of Oh Concentration with Laser-induced Predissociative Fluorescence in High-pressure Propane Flames by : 張智銘
Download or read book Quantitative Measurement of Oh Concentration with Laser-induced Predissociative Fluorescence in High-pressure Propane Flames written by 張智銘 and published by . This book was released on 2006 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantitative Measurement of Hydroxyl Radical (OH) Concentration in Premixed Flat Flame by Combining Laser-induced Fluorescence and Direct Absorption Spectroscopy*Project Supported by the National Natural Science Foundation of China (Grant No. 11272338), the Science and Technology on Scramjet Key Laboratory Funding, China (Grant No. STSKFKT 2013004), and the China Scholarship Council by :
Download or read book Quantitative Measurement of Hydroxyl Radical (OH) Concentration in Premixed Flat Flame by Combining Laser-induced Fluorescence and Direct Absorption Spectroscopy*Project Supported by the National Natural Science Foundation of China (Grant No. 11272338), the Science and Technology on Scramjet Key Laboratory Funding, China (Grant No. STSKFKT 2013004), and the China Scholarship Council written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: An accurate and reasonable technique combining direct absorption spectroscopy and laser-induced fluorescence (LIF) methods is developed to quantitatively measure the concentrations of hydroxyl in CH4 /air flat laminar flame. In our approach, particular attention is paid to the linear laser-induced fluorescence and absorption processes, and experimental details as well. Through measuring the temperature, LIF signal distribution and integrated absorption, spatially absolute OH concentrations profiles are successfully resolved. These experimental results are then compared with the numerical simulation. It is proved that the good quality of the results implies that this method is suitable for calibrating the OH-PLIF measurement in a practical combustor.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781724277794 Total Pages :244 pages Book Rating :4.2/5 (777 download)
Book Synopsis Laser Induced Fluorescence Measurements and Modeling of Nitric Oxide in High-Pressure Premixed Flames by : National Aeronautics and Space Administration (NASA)
Download or read book Laser Induced Fluorescence Measurements and Modeling of Nitric Oxide in High-Pressure Premixed Flames written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-25 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-induced fluorescence (LIF) has been applied to the quantitative measurement of nitric oxide (NO) in premixed, laminar, high-pressure flames. Their chemistry was also studied using three current kinetics schemes to determine the predictive capabilities of each mechanism with respect to NO concentrations. The flames studied were low-temperature (1600 less than T less than 1850K) C2H6/O2/N2 and C2H6/O2/N2 flames, and high temperature (2100 less than T less than 2300K) C2H6/O2/N2 flames. Laser-saturated fluorescence (LSF) was initially used to measure the NO concentrations. However, while the excitation transition was well saturated at atmospheric pressure, the fluorescence behavior was basically linear with respect to laser power at pressures above 6 atm. Measurements and calculations demonstrated that the fluorescence quenching rate variation is negligible for LIF measurements of NO at a given pressure. Therefore, linear LIF was used to perform quantitative measurements of NO concentration in these high-pressure flames. The transportability of a calibration factor from one set of flame conditions to another also was investigated by considering changes in the absorption and quenching environment for different flame conditions. The feasibility of performing LIF measurements of (NO) in turbulent flames was studied; the single-shot detection limit was determined to be 2 ppm. Reisel, John R. and Laurendeau, Normand M. Unspecified Center NASA-CR-195404, E-9248, NAS 1.26:195404 NAG3-1038; RTOP 537-02-20...
Book Synopsis Laser Induced Fluorescence (LIF) Spectroscopic Measurement of Hydroxyl (OH) Radical Concentration Near Surfaces with Varying Chemical and Thermal Activity in Low Pressure Stoichiometric Hydrogen/oxygen Flames by : Shaurya Prakash
Download or read book Laser Induced Fluorescence (LIF) Spectroscopic Measurement of Hydroxyl (OH) Radical Concentration Near Surfaces with Varying Chemical and Thermal Activity in Low Pressure Stoichiometric Hydrogen/oxygen Flames written by Shaurya Prakash and published by . This book was released on 2003 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Quantitative Measurements of One-dimensional OH Absolute Concentration Profiles in a Methane/air Flat Flame by Bi-directional Laser-induced Fluorescence*Project Supported by the National Key Scientific Instrument and Equipment Development Projects of China (Grant No. 2012YQ040164), the National Natural Science Foundation of China (Grant Nos. 61275127 and 91441130), the China Postdoctoral Science Foundation (Grant No. 2014M560262), and the Postdoctoral Fellowship in Heilongjiang Province, China (Grant No. LBH-Z14074). by :
Download or read book Quantitative Measurements of One-dimensional OH Absolute Concentration Profiles in a Methane/air Flat Flame by Bi-directional Laser-induced Fluorescence*Project Supported by the National Key Scientific Instrument and Equipment Development Projects of China (Grant No. 2012YQ040164), the National Natural Science Foundation of China (Grant Nos. 61275127 and 91441130), the China Postdoctoral Science Foundation (Grant No. 2014M560262), and the Postdoctoral Fellowship in Heilongjiang Province, China (Grant No. LBH-Z14074). written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Induced Fluorescence Spectroscopy of OH in Flames by : Calvin Kwok-Yu Chan
Download or read book Laser Induced Fluorescence Spectroscopy of OH in Flames written by Calvin Kwok-Yu Chan and published by . This book was released on 1979 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oh Planar Laser Induced Fluorescence Measurements for the Study of High Pressure Flames by : Nasa Technical Reports Server (Ntrs)
Download or read book Oh Planar Laser Induced Fluorescence Measurements for the Study of High Pressure Flames written by Nasa Technical Reports Server (Ntrs) and published by BiblioGov. This book was released on 2013-07 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planar laser induced fluorescence (PLIF) is used by the Combustion Branch at the NASA Glenn Research Center (NASA Glenn) to assess the characteristics of the flowfield produced by aircraft fuel injectors. To improve and expand the capabilities of the PLIF system new equipment was installed. The new capabilities of the modified PLIF system are assessed by collecting OH PLIF in a methane/air flame produced by a flat flame burner. Specifically, the modifications characterized are the addition of an injection seeder to a Nd: YAG laser pumping an optical parametric oscillator (OPO) and the use of a new camera with an interline CCD. OH fluorescence results using the injection seeded OPO laser are compared to results using a Nd: YAG pumped dye laser with ultraviolet extender (UVX). Best settings of the new camera for maximum detection of PLIF signal are reported for the controller gain and microchannel plate (MCP) bracket pulsing. Results are also reported from tests of the Dual Image Feature (DIF) mode of the new camera which allows image pairs to be acquired in rapid succession. This allows acquisition of a PLIF image and a background signal almost simultaneously. Saturation effects in the new camera were also investigated and are reporte
Book Synopsis Laser-induced Fluorescence of HCO Concentration in Flames by : Eric Diau
Download or read book Laser-induced Fluorescence of HCO Concentration in Flames written by Eric Diau and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NH and OH Concentration Profiles in a Stoichiometric CH4/N2O Flame by Laser Excited Fluorescence and Absorption Techniques by : William R. Anderson
Download or read book NH and OH Concentration Profiles in a Stoichiometric CH4/N2O Flame by Laser Excited Fluorescence and Absorption Techniques written by William R. Anderson and published by . This book was released on 1982 with total page 43 pages. Available in PDF, EPUB and Kindle. Book excerpt: The concentration profiles of NH and OH were measured in an atmospheric pressure premixed laminar Ch4/N2O flame over a porous plug flat flame burner. Relative profiles were obtained by laser excited fluorescence for both compounds and normalized by laser absorption at a single point for NH. The OH concentration was high enough to allow absorption measurements at several points for comparison with fluorescence results. The steeply rising portions of the profiles occur at about the same height above the burner but the NH is confined to the primary reaction zone while the OH decay extends into the burnt gases. The apparent OH decay was found, using a simple analysis, to be consistent with second order kinetics as observed by previous workers on other flames. However, it should be noted that diffusion of OH is at least partially responsible for the apparent shape of the profile resulting in the second order decay kinetics found using the simple analysis. The decay rate is smaller than that observed by previous workers for CH4/air flames. Qualitative reasons for the different decay rates found in the studies are discussed in detail. A strong dependence of OH decay rate on final flame temperature, and hence the cooling rate peculiar to the burner concentration in CH4/air, CH4/NO, and H2/N2O flames were made in order to elucidate the flame chemistry. (Author).
Book Synopsis Quantitative Fluorescence Measurements of the OH Radical in High Pressure Methane Flames by : B. E. Battles
Download or read book Quantitative Fluorescence Measurements of the OH Radical in High Pressure Methane Flames written by B. E. Battles and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser-induced Fluorescence Measurements of Radicals in Low-pressure Flames to Optimize Combustion Chemistry by : Jay B. Jeffries
Download or read book Laser-induced Fluorescence Measurements of Radicals in Low-pressure Flames to Optimize Combustion Chemistry written by Jay B. Jeffries and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Temperature Profile Determination for Low Pressure Laminar Methane Flames from OH Laser-induced Fluorescence by :
Download or read book Temperature Profile Determination for Low Pressure Laminar Methane Flames from OH Laser-induced Fluorescence written by and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis AIAA Journal by : American Institute of Aeronautics and Astronautics
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 1996 with total page 1364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laser Technology and its Applications by : Yufei Ma
Download or read book Laser Technology and its Applications written by Yufei Ma and published by BoD – Books on Demand. This book was released on 2019-01-03 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The laser has become more and more important in scientific research and industrial applications. Now, the laser wavelength can cover the range from ultraviolet to terahertz and output laser performance has significantly progressed in recent years. This book is focused on the advanced diode laser, fiber laser, and their applications in laser ablation, laser-introduced fluorescence, and laser treatment. The advantages of laser technology are shown comprehensively.
Book Synopsis Book of Abstracts by : American Chemical Society. Meeting
Download or read book Book of Abstracts written by American Chemical Society. Meeting and published by . This book was released on 1985 with total page 1398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Spectra and Structures of Simple Free Radicals by : Gerhard Herzberg
Download or read book The Spectra and Structures of Simple Free Radicals written by Gerhard Herzberg and published by Courier Corporation. This book was released on 1988-01-01 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Authoritative and clearly written."—Applied Optics The direct observation of short-lived free radicals and the consequent study of their structure and reactions have led to important developments in almost every branch of chemistry as well as in other areas. This volume by a Nobel laureate offers an excellent introduction to the essentials of molecular spectroscopy. The introductory chapter discusses experimental methods and illustrates the observed spectra of various molecules and free radicals. Subsequent chapters explore rotational, vibrational, and electronic energy levels of diatomic molecules and ions; radiative transitions; linear and nonlinear polyatomic radicals and ions; continuous and diffuse spectra; predissociation and pre-ionization; and recombination. The well-illustrated text features more than 100 figures and spectra. A distilled version of the author's monumental three-volume study, Molecular Spectra and Molecular Structure, it constitutes a superb resource for anyone wishing a concise but complete treatment of the fundamentals of molecular spectroscopy.
Book Synopsis MILD Combustion: Modelling Challenges, Experimental Configurations and Diagnostic Tools by : Alessandro Parente
Download or read book MILD Combustion: Modelling Challenges, Experimental Configurations and Diagnostic Tools written by Alessandro Parente and published by Frontiers Media SA. This book was released on 2021-11-26 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
