Laser-Raman Measurements in a Ducted, Two-Stream, Subsonic, H2/Air Combustion Flow PDF Download
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Author: W. D. Williams Publisher: ISBN: Category : Languages : en Pages : 63
Book Description
The laser-Raman diagnostic technique has been used for investigating a ducted, two-stream, subsonic, H2/air combustion flow with turbulent jet mixing and recirculation. A primary jet of high-velocity air was surrounded by an outer, low-velocity hydrogen stream. The duct-to-inner-nozzle diameter ratio was varied. The ratios were 2 and 10 for the two conditions investigated. The radial distributions of static temperature and species number densities were determined at several axial positions for each test condition. (Author).
Author: W. D. Williams Publisher: ISBN: Category : Languages : en Pages : 63
Book Description
The laser-Raman diagnostic technique has been used for investigating a ducted, two-stream, subsonic, H2/air combustion flow with turbulent jet mixing and recirculation. A primary jet of high-velocity air was surrounded by an outer, low-velocity hydrogen stream. The duct-to-inner-nozzle diameter ratio was varied. The ratios were 2 and 10 for the two conditions investigated. The radial distributions of static temperature and species number densities were determined at several axial positions for each test condition. (Author).
Author: Alan C. Eckbreth Publisher: CRC Press ISBN: 9789056995324 Category : Technology & Engineering Languages : en Pages : 636
Book Description
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
Author: M. Pichal Publisher: Springer Science & Business Media ISBN: 3642824595 Category : Science Languages : en Pages : 375
Book Description
The General Assembly of the International Union of Theoreti cal and Applied Mechanics decided in Cambridge, United King dom, in 1982 to arrange the Symposium on Optical Methods in the Dynamics of Fluids and Solids. This decision was stimu lated by the fact that optical diagnostic methods are a more and more important tool in experimental mechanics. In contrast to the foregoing Symposium in Poitiers. 1976, which was devoted exclusively to optical methods in the me chanics of solids, it was a fruitful idea to bring together during the present Symposium scientists engaged in optical methods in the dynamics of all phases. It was proposed by the International Scientific Committee of the Symposium that contributions in experimental fluid dynamics should deal with transition from laminar to turbu lent flow, compressible fluid flow including high temperatu re flow, non-equilibrium phenomena in fluid dynamics and the interaction of fluid flow with solid boundaries and bodies. As regard. the mechanics of solids, the contributions should deal with the application of optical methods in the wave propagation in shock loaded bodies, in phenomena connected with the fracture mechanism, in nonstationary Vibrations of elements and parts of systems and in nonstationary strains in structures. The International Scientific Committee preferred to avoid invited lectures and in cooperation with the National Com mittees of IUTAM called for contribution from individual countries.
Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781723190957 Category : Languages : en Pages : 196
Book Description
Ultraviolet (UV) spontaneous vibrational Raman scattering combined with laser-induced predissociative fluorescence (LIPF) is developed for temperature and multi-species concentration measurements. Simultaneous measurements of temperature, major species (H2, O2, N2, H2O), and minor species (OH) concentrations are made with a 'single' narrow band KrF excimer laser in subsonic and supersonic lifted turbulent hydrogen-air diffusion flames. The UV Raman system is calibrated with a flat-flame diffusion burner operated at several known equivalence ratios from fuel-lean to fuel-rich. Temperature measurements made by the ratio of Stokes/anti-Stokes signal and by the ideal gas law are compared. The single shot measurement precision for concentration and temperature measurement is 5 to 10 pct. Calibration constants and bandwidth factors are determined from the flat burner measurements and used in a data reduction program to arrive at temperature and species concentration measurements. These simultaneous measurements of temperature and multi-species concentrations allow a better understanding of the complex turbulence-chemistry interactions and provide information for the input and validation of CFD models. Cheng, T. S. and Wehrmeyer, J. A. and Pitz, R. W. Unspecified Center DIFFUSION FLAMES; GAS JETS; LASER INDUCED FLUORESCENCE; RAMAN SPECTRA; SUBSONIC FLOW; SUPERSONIC JET FLOW; TURBULENT JETS; CONCENTRATION (COMPOSITION); EQUATIONS OF STATE; EXCIMER LASERS; IDEAL GAS; TEMPERATURE MEASUREMENT; TURBULENT DIFFUSION; VIBRATION...
Author: W. D. Williams
Author: W. D. Williams
Author: Alan C. Eckbreth
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Author: 
Author: M. Pichal
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Author: National Aeronautics and Space Administration (NASA)
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Author: T. S. Cheng
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