NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsNon-Intrusive Laser-Induced Imaging for Speciation and Patternation in High Pressure Gas Turbine CombustorsThe next generation of was turbine combustors for aerospace applications will be required to meet increasingly stringent constraints on fuel efficiency, noise abatement, and emissions. The power plants being designed to meet these constraints will operate at extreme conditions of temperature and pressure, thereby generating unique challenges to the previously employed diagnostic methodologies. Current efforts at NASA Glenn Research Center (GRC) utilize optically accessible, high pressure flametubes and sector combustor rigs to probe, via advanced nonintrusive laser techniques, the complex flowfields encountered in advanced combustor designs. The fuel-air mixing process is of particular concern for lowering NO(x) emissions generated in lean, premixed engine concepts. Using planar laser-induced fluorescence (PLIF) we have obtained real-time, detailed imaging of the fuel spray distribution for a number of fuel injector over a wide range of operational conditions that closely match those expected in the proposed propulsion systems. Using a novel combination of planar imaging, of fuel fluorescence and computational analysis that allows an examination of the flowfield from any perspective, we have produced spatially and temporally resolved fuel-air distribution maps. These maps provide detailed insight into the fuel injection at actual conditions never before possible, thereby greatly enhancing the evaluation of fuel injector performance and combustion phenomena.Document ID19990097418Acquisition SourceGlenn Research CenterDocument TypeReprint (Version printed in journal)AuthorsLocke, Randy J.*(DYNACS Engineering Co., Inc. Brook Park, OH United States)*Zaller, Michelle M.*(NASA Glenn Research Center Cleveland, OH United States)*Hicks, Yolanda R.*(NASA Glenn Research Center Cleveland, OH United States)*Anderson, Robert C.*(NASA Glenn Research Center Cleveland, OH United States)*Date AcquiredSeptember 6, 2013Publication DateSeptember 1, 1999Subject CategoryInstrumentation And PhotographyReport/Patent NumberNAS 1.15:209395NASA/TM-1999-209395E-11829Meeting InformationMeeting: Optical Diagnostics for Fluids, Heat, Combustion, and Photomechanics of SolidsLocation: Denver, COCountry: United StatesStart Date: July 18, 1999End Date: July 23, 1999Sponsors:International Society for Optical EngineeringFunding Number(s)PROJECT: RTOP 537-05-20PROJECT: RTOP 538-17-10Distribution LimitsPublicCopyrightWork of the US Gov. Public Use Permitted.Available DownloadsNameType19990097418.pdfSTIcloud_downloadcontent_copyvisibilityRelated RecordsThere are no records associated with this record.visibility_offNo Preview Available
 No Fear Act | Freedom of Information Act | Office of the Inspector General | Agency Financial ReportsNASA Web Privacy Policy and Important Notices | NASA Guidelines for Quality of InformationDisclaimers, Copyright, Terms of Use | Accessibility | NASA OCIO | USA.gov | NASA.govContact Us | Site MapSTI LogoNASA Official: JoAnne R. Calhoun Site Curator: STI Compliance and Distribution Services Last Modified: September 12, 2024