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Simultaneous Temperature Measurements With Raman And Cars Coherent Antistokes Raman Scattering In Laminar Flames
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Book Synopsis Simultaneous Temperature Measurements with Raman and CARS (Coherent Antistokes Raman Scattering) in Laminar Flames by : W. Stricker
Download or read book Simultaneous Temperature Measurements with Raman and CARS (Coherent Antistokes Raman Scattering) in Laminar Flames written by W. Stricker and published by . This book was released on 1986 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatially resolved temperature measurements in laminar premixed flames were made using Coherent Antistokes Raman Scattering (CARS) and spontaneous Raman spectroscopy. In the case of narrowband (scanning) CARS, the experimental arrangement allows the performance of simultaneous temperature measurements with both techniques. For broadband (multiplex) CARS the measurements have to be made successively. Three different Raman linewidth models were used for CARS data evaluation. The results were compared with the independently recorded rotational Raman temperatures. Temperature differences up to 10% were observed, depending on the linewidth model used. For two, more complicated line-width models the CARS and Raman temperatures are in good agreement.
Book Synopsis Dual-pump Coherent Anti-Stokes Raman Scattering Technique for Simultaneous Measurement of Pressure and Temperature by : Robert E. Foglesong
Download or read book Dual-pump Coherent Anti-Stokes Raman Scattering Technique for Simultaneous Measurement of Pressure and Temperature written by Robert E. Foglesong and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Coherent Raman Spectroscopy: Applications And New Developments - Proceedings Of The Xi European Cars Workshop by : F Castellucci
Download or read book Coherent Raman Spectroscopy: Applications And New Developments - Proceedings Of The Xi European Cars Workshop written by F Castellucci and published by World Scientific. This book was released on 1993-02-09 with total page 281 pages. Available in PDF, EPUB and Kindle. Book excerpt: The meeting was a forum on the 'state of the art' of the fundamental aspects and the applications of Coherent Antistokes Raman Scattering (CARS) and related nonlinear optic techniques.This volume contains the works of outstanding scientists from the most distinguished research centers of universities, public and private institutions in Europe and other countries, who work on the theory and application of nonlinear laser spectroscopic techniques to the study of gas combustion kinetics, noninterfering flame temperature measurements, high temperature reactors, plasmas and the exciton and vibrational dynamics in condensed phases.
Book Synopsis Coherent Anti-Stokes Raman Spectroscopy (CARS) Measurements in a Laminar Flame Coal Combustor by : Robert D. Hancock
Download or read book Coherent Anti-Stokes Raman Spectroscopy (CARS) Measurements in a Laminar Flame Coal Combustor written by Robert D. Hancock and published by . This book was released on 1989 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Application of Coherent Anti-Stokes Raman Scattering to Combustion Media by : Larry P. Goss
Download or read book Application of Coherent Anti-Stokes Raman Scattering to Combustion Media written by Larry P. Goss and published by . This book was released on 1981 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: A laboratory-based system utilizing the Nd:YAG laser has been developed to investigate the Coherent Anti-Stokes Raman Scattering (CARS) of molecular gases in combustion. Single-shot and simultaneous experimental measurements of species concentration and temperature of combustion media are reported and compared with other optical techniques and theoretical predictions. The adverse effects of beam propagation through turbulence are investigated and discussed. A transportable hardened CARS system, constructed to operate in adverse environments, has been used to conduct a series of investigations in a practical combustion tunnel. Temperature and number-density measurements made as a function of fuel-air flow, position in the combustion tunnel, and fuel variation--including both gaseous and liquid fuels--are reported. (Author).
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Ultrabroadband Coherent Anti-Stokes Raman Scattering for Gas Temperature and Concentration Measurements by : Yang Ran
Download or read book Ultrabroadband Coherent Anti-Stokes Raman Scattering for Gas Temperature and Concentration Measurements written by Yang Ran and published by . This book was released on 2021* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of this work was to investigate and extend the capability of the ultrabroadband CARS technique for temperature and concentration measurements for multiple species and a wide range of practical applications, especially for gasification diagnostics. Practical gasification or combustion devices mainly work under high pressures. Therefore, a sufficiently short probe pulse (~2 ps) was utilized for collision-free measurements. In order to simultaneously excite multiple gas species with Raman shifts up to ~4200 cm-1, a ~7 fs pump/Stokes beam was used. Both beams are generated by a 200 kHz BBO-based OPCPA system. Based on this configuration, the experimental methods and the theoretical framework for temperature and concentration determination were developed. The accuracy and precision of this technique was at first determined in a gas oven with controlled temperatures and gas flows. In this way, temperature measurements at temperatures from 295 K up to ~1300 K were performed with excellent accuracies within ~4%. The CO detection limit in CO2 atmosphere was extended to 0.5% at room temperature and 2% at 1073 K at a pressure of 1.4 bar. Temperature and concentration measurements were further extended to 20 bar and 10 bar, respectively. The influence of the ultrabroadband spectrum on the excitation efficiencies was investigated in detail. Subsequently, ultrabroadband CARS technique was applied for the first time for coal gasification investigations. Successful CARS analytical results were obtained even for the gasification process of a single coal particle.
Book Synopsis Laser Based Measurements of Temperatures with CARS, in the Risø Furnace Coherent Anti-Stokes Raman Scattering by : F. W. Cortzen
Download or read book Laser Based Measurements of Temperatures with CARS, in the Risø Furnace Coherent Anti-Stokes Raman Scattering written by F. W. Cortzen and published by . This book was released on 1990 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Cars [coherent Anti-Stokes Raman Spectroscopy] Investigations in Sooting and Turbulent Flames by : Alan C.. Eckbreth
Download or read book Cars [coherent Anti-Stokes Raman Spectroscopy] Investigations in Sooting and Turbulent Flames written by Alan C.. Eckbreth and published by . This book was released on 1979 with total page 67 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coherent anti-Stoke Raman spectroscopy (CARS) investigations in sooting, laminar and turbulent, propane-fueled diffusion flames are reported. For a 5320 A pump wavelength, using a frequency-doubled neodymium laser, interferences can occur at very high soot densities. For N2 CARS, there are both incoherent and coherent components to the interference. The incoherent interference arises primarily from anti-Stokes fluorescence from C2 excited by Stokes laser absorption. The C2 is created by the laser vaporization of soot particulates, shown to occur even on a nanosecond time scale. The coherent interference arises most probably from electronically-resonantly enhanced wave mixing in the C2. Fortunately, neither interference is very large. By proper experimental design, interference-free CARS spectra from flame N2 can be obtained even at high soot densities. CARS signatures from N2 have been employed to map the temperature field with high spatial precision throughout a small, luminous, highly sooting, laminar propane diffusion flame. Single pulse (approx, 10 nanosecond) CARS thermometry has been demonstrated in various regions of a highly swireld, turbuelnt propane diffusion flame. Based upon these investigations, CARS continues to appear very promising for diagnostic applications to practical combustion sources. (Author).
Download or read book Energy Research Abstracts written by and published by . This book was released on 1989 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiannual, with semiannual and annual indexes. References to all scientific and technical literature coming from DOE, its laboratories, energy centers, and contractors. Includes all works deriving from DOE, other related government-sponsored information, and foreign nonnuclear information. Arranged under 39 categories, e.g., Biomedical sciences, basic studies; Biomedical sciences, applied studies; Health and safety; and Fusion energy. Entry gives bibliographical information and abstract. Corporate, author, subject, report number indexes.
Book Synopsis Coherent Anti-Stokes Raman Spectroscopy (CARS) Gas Temperature Measurements in a Monodisperse Combusting Droplet Stream by : JunYong Zhu
Download or read book Coherent Anti-Stokes Raman Spectroscopy (CARS) Gas Temperature Measurements in a Monodisperse Combusting Droplet Stream written by JunYong Zhu and published by . This book was released on 1991 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Technical Reports Awareness Circular : TRAC. by :
Download or read book Technical Reports Awareness Circular : TRAC. written by and published by . This book was released on 1987-10 with total page 328 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis CARS (Coherent Anti-Stokes Raman Scattering) Spectroscopy of the Reaction Zone of Methane-Nitrous Oxide and RDX Propellant Flames by : L. E. Harris
Download or read book CARS (Coherent Anti-Stokes Raman Scattering) Spectroscopy of the Reaction Zone of Methane-Nitrous Oxide and RDX Propellant Flames written by L. E. Harris and published by . This book was released on 1986 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: CARS spectra were obtained for a phi = 3.2 CH4/N20 model and nitramine propellant flames throughout the reaction and post-flame zones in order to assess kinetic mechanisms occurring in these flames. The reaction zone of the rich CH4/N20 flame was studied primarily to provide a stationary flame analog to the transient propellant flame. In the CH4/N20 flame, the decay of the initial products was observed through the Q-branch of the nu 1 and nu 3 modes of N20 and the Q, O and S branches of nu 2 and 2 nu 2 modes of CH4. The formation of the products N2, H2 Q(v' = 0 and v' = 1) and S(5) - S(9), and CO2 were also observed. Temperatures were obtained from both the H2 and N2 Q-branches. In the nitramine propellant flame, the upper bound of the gas-surface interface temperature was measured as 900 K + or - 100 K from the H2 Q-branch. Near the surface of the propellant, reactant RDX (1599 cm-1 tentatively assigned as asymetric NO2 stretch) and transients HCN (NU1) and NO are observed as moderate concentration (> or = 1%). The final product N2 is observed at low concentration, (approx. 1%), H2 (Q and S beaches) and CO are observed at higher concentration (> or = 10%). RDX and HCN decay within 2 mm of the propellant surface while NO remains constant until 4 mm where it decays with a concommitant rise in N2 concentration and temperature. H2 and CO also increase in temperature and concentration.
Book Synopsis Laser Diagnostics for Combustion Temperature and Species by : Alan C. Eckbreth
Download or read book Laser Diagnostics for Combustion Temperature and Species written by Alan C. Eckbreth and published by CRC Press. This book was released on 1996-10-10 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on spectroscopically-based, spatially-precise, laser techniques for temperature and chemical composition measurements in reacting and non-reacting flows, this book makes these powerful and important new tools in combustion research
Book Synopsis Industrial Combustion Testing by : Jr., Charles E. Baukal
Download or read book Industrial Combustion Testing written by Jr., Charles E. Baukal and published by CRC Press. This book was released on 2010-07-29 with total page 777 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until now, anyone conducting industrial combustion tests had to either rely on old methods, go scurrying through the literature to find proven applicable methodologies, or hire top-shelf consultants such as those that work for cutting-edge companies like John Zink. Manufacturers can no longer take industrial combustion for granted. Air and noise po
Book Synopsis Optical Processes in Microparticles and Nanostructures by : Ali Serpenguzel
Download or read book Optical Processes in Microparticles and Nanostructures written by Ali Serpenguzel and published by World Scientific. This book was released on 2011 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Festschrift is a tribute to the eminent scholar, Professor Richard Kounai Chang, on his retirement from Yale University on June 12, 2008. During his over four decades of scientific exploration, Professor Chang has made a lasting contribution to the development of linear and nonlinear optics and devices in confined geometries, of surface second-harmonic generation and surface-enhanced Raman scattering, and of novel methods for detecting airborne aerosol pathogens. This volume assembles a collection of articles contributed by former students, collaborators, and colleagues of Professor Chang all over the world. The topics span a diverse scope in applied optics frontiers, many of which are rooted in Professor Chang's pioneering research.
Book Synopsis Investigation of the Feasibility of CARS Measurements in Scramjet Combustion by : J. A. Shirley
Download or read book Investigation of the Feasibility of CARS Measurements in Scramjet Combustion written by J. A. Shirley and published by . This book was released on 1980 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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