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EBookClubs

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Book Spatially resolved Nonintrusive Measurements in a Nonreacting Scramjet Combustor Using Laser induced Iodine Fluorescence

Download or read book Spatially resolved Nonintrusive Measurements in a Nonreacting Scramjet Combustor Using Laser induced Iodine Fluorescence written by Douglas G. Fletcher and published by . This book was released on 1989 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Laser Based Flowfield Imaging in a Lean Premixed Prevaporized Sector Combustor

Download or read book Laser Based Flowfield Imaging in a Lean Premixed Prevaporized Sector Combustor 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 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: OH and fuel planar laser-induced fluorescence (PLIF) is used qualitatively in this study to observe the flame structure resultant from different fuel injector dome configurations within the 3-cup sector combustor test rig. The fluorescence images are compared with some computational fluid dynamics (CFD) results. Interferences in obtaining OH fluorescence signals due to the emission of other species are assessed. NO PLIF images are presented and compared to gas analysis results. The comparison shows that PLIF NO can be an excellent method for measuring NO in the flame. Additionally, we present flow visualization of the molecular species C2.Hicks, Yolanda R. and Locke, Randy J. and Anderson, Robert C.Glenn Research CenterCOMPUTATIONAL FLUID DYNAMICS; FLOW DISTRIBUTION; LASER INDUCED FLUORESCENCE; PREMIXING; COMBUSTION CHAMBERS; PREVAPORIZATION; GAS ANALYSIS; FUEL INJECTION; DETECTORS; CCD CAMERAS; LASER BEAMS; HYDROXIDES; NITROGEN OXIDES; IMAGE ANALYSIS; LASER APPLICATIONS

Book Study of Dual mode Flowfield in Scramjet Combustor

Download or read book Study of Dual mode Flowfield in Scramjet Combustor written by S. N. Tiwari and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Dual mode Flowfield in Scramjet Combustor

Download or read book Dual mode Flowfield in Scramjet Combustor written by T. M. Abdel-Salam and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Imaging of Laser induced Fluorescence in a High pressure Combustor

Download or read book Imaging of Laser induced Fluorescence in a High pressure Combustor written by Jonathan H. Frank and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Advanced Laser Diagnostics of Compressible Flows

Download or read book Advanced Laser Diagnostics of Compressible Flows written by and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Advanced laser diagnostics have been developed to study the fundamentals of supersonic flows for scramjet applications. Filtered Rayleigh scattering and planar laser-induced fluorescence (PLIF) techniques were developed and applied for measuring temperature and species in reacting and nonreacting flows. Fundamental studies of a cavity flame-holder in reacting and nonreacting supersonic flows were conducted. Several cavity-configuration and fueling schemes were employed, and combustion performance was documented. Raman scattering was utilized to measure the time-averaged equivalence ratio of cavity fueling. OH-PLIF was used to mark the reaction zone of the combustion and aid the optimization of fueling. An isolator of rectangular cross section with adjustable divergence angles has been evaluated for different inlet Mach numbers. Shock structures and fluctuations of shock position were also identified at various Mach numbers, divergence angles, and pressure ratios. The potential application of a plasma torch as an alternative ignition source for the scramjet combustor was also investigated through experimental and CFD studies. Maintenance and upgrade of the test facility and support of testing were performed.

Book Laser induced Fluorescence Measurements Within an Arcjet Thruster Nozzle

Download or read book Laser induced Fluorescence Measurements Within an Arcjet Thruster Nozzle written by P. Victor Storm and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Development and Optimisation of Two line Planar Laser Induced Fluorescence Technique for Combustion Measurements

Download or read book Development and Optimisation of Two line Planar Laser Induced Fluorescence Technique for Combustion Measurements written by Mohammadreza Anbari Attar and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study has focused on development, optimisation and implementation of the 2-line Planar Laser Induced Fluorescence (2-line PLIF) technique for combustion measurements on a single cylinder optical Gasoline Direct Injection (GDI) engine with both Spark Ignition (SI) and Controlled Auto Ignition (CAI) combustion operations. The CAI combustion was achieved by employing Negative Valve Overlap (NVO). Two excitation wavelengths at 308 nm (directly from a XeCl laser) and 277 nm (via Raman shifting a KrF laser output at 248 nm) were exploited for the measurements. A calibration curve of fluorescence signal intensity ratio of the two laser beams as a function of temperature was obtained by conducting a series of static tests on a specially designed Constant Volume Chamber (CVC). The developed technique was validated by measurements of in-cylinder charge temperature during the compression stroke for both motoring and firing cycles and comparing the PLIF values with the temperature values calculated from in-cylinder pressure data assuming a polytropic compression. Following the validation measurements, the technique was applied to study of fuel spray characteristics and simultaneous measurements of in-cylinder charge temperature and mole fraction of Exhaust Gas Residuals (EGR). Further optimisation of the thermometry technique by enhancing the fluorescence Signal to Noise Ratio (SNR) and improving both the temporal and spatial resolutions as well as measurements precision provided the opportunity to apply the technique to other combustion measurements. The thesis presents the first application of the 2-line PLIF diagnostic in study of direct injection charge cooling effects and study of flame thermal stratification in IC engines.