NASA LogoNTRSNTRS - NASA Technical Reports ServerSearchmore_vertCollectionsAboutNewsHelpLogin Back to ResultsPIV and Rotational Raman-Based Temperature Measurements for CFD Validation in a Single Injector Cooling FlowFilm cooling is used in a wide variety of engineering applications for protection of surfaces from hot or combusting gases. The design of more efficient thin film cooling geometries/configurations could be facilitated by an ability to accurately model and predict the effectiveness of current designs using computational fluid dynamics (CFD) code predictions. Hence, a benchmark set of flow field property data were obtained for use in assessing current CFD capabilities and for development of better turbulence models. Both Particle Image Velocimetry (PIV) and spontaneous rotational Raman scattering (SRS) spectroscopy were used to acquire high quality, spatially-resolved measurements of the mean velocity, turbulence intensity and also the mean temperature and normalized root mean square (rms) temperatures in a single injector cooling flow arrangement. In addition to flowfield measurements, thermocouple measurements on the plate surface enabled estimates of the film effectiveness. Raman spectra in air were obtained across a matrix of radial and axial locations downstream from a 68.07 mm square nozzle blowing heated air over a range of temperatures and Mach numbers, across a 30.48 cm long plate equipped with a single injector cooling hole. In addition, both centerline streamwise 2-component PIV and cross-stream 3-component Stereo PIV data at 15 axial stations were collected in the same flows. The velocity and temperature data were then compared against Wind-US CFD code predictions for the same flow conditions. The results of this and planned follow-on studies will support NASA's development and assessment of turbulence models for heated flows.Document ID20180000917Acquisition SourceGlenn Research CenterDocument TypeTechnical Memorandum (TM)AuthorsMark P Wernet*(Glenn Research Center Cleveland, Ohio, United States)*Georgiadis, Nicholas J.*(Glenn Research Center Cleveland, Ohio, United States)*Locke, Randy J.*(Vantage Partners, LLC Cleveland, OH, United States)*Date AcquiredFebruary 5, 2018Publication DateJanuary 30, 2018Subject CategoryStatistics And ProbabilityInstrumentation And PhotographyFluid Mechanics And ThermodynamicsReport/Patent NumberE-19459NASA/TM-2018-219739GRC-E-DAA-TN50589Funding Number(s)WBS: WBS 109492.02.03.01.01.01CONTRACT_GRANT: NNC12BA01BDistribution LimitsPublicCopyrightPublic Use Permitted.Technical ReviewSingle ExpertKeywordsRaman ScatteringParticle Image VelocimetryFilm CoolinAvailable DownloadsNameType20180000917.pdfSTIcloud_downloadcontent_copyvisibilitySingle_Hole_cooling_TM2017.zipOthercloud_downloadcontent_copyRelated RecordsIDRelationTitle20190030814See AlsoPIV and Rotational Raman-Based Temperature Measurements for CFD Validation in a Single Injector Cooling Flow20180001473See AlsoPIV and Rotational Raman-Based Temperature Measurements for CFD Validation in a Single Injector Cooling Flowvisibility_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