Publicado 12 números por año
ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684
Indexed in
DIESEL FUEL SPRAY DROPLET SIZES AND VOLUME FRACTIONS FROM THE REGION 25 MM BELOW THE ORIFICE
SINOPSIS
Droplet diameter and volume fraction measurements are reported for three different fuels (diesel fuel, dodecane, and methyl oleate) as a function of radial position within a pressure-atomized spray typical of diesel systems. Injection system parameters were peak pressures of 62 MPa and a single-orifice injector with a 0.31-mm orifice diameter and an L/D ratio of approximately 2. Results are for individual injection events into atmospheric-pressure and ambient-temperature air at an axial distance of 25 mm from the nozzle. Measurements relied on infrared scattering, which was specifically chosen due to the high droplet number densities of these sprays. Details of the measurement technique are presented along with results. Results indicate droplet diameters are the smallest at the spray centerline (2–3.25 mm), and grow with radial distance from the centerline (6–8 mm at the spray periphery). Volume fractions greater than 1% are seen at the spray centerline, and, once the spray has developed, the majority of the mass is contained in the central 0.75-mm-radial region. Spray details presented include the definition of transient time periods for the spray, the spray width as a function of time, the coupling between injection pressure and observed diameters (SMD) and volume fractions, and the differences in the spray properties as a function of fuel type.
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Shi H., Kleinstreuer C., Simulation and Analysis of High-Speed Droplet Spray Dynamics, Journal of Fluids Engineering, 129, 5, 2007. Crossref
-
Labs J. E., Filley J., Jepsen E., Parker T. E., A constant volume diesel spray combustion facility and the corresponding experimental diagnostics, Review of Scientific Instruments, 76, 3, 2005. Crossref
-
Benajes J., Payri R., Molina S., Soare V., Investigation of the Influence of Injection Rate Shaping on the Spray Characteristics in a Diesel Common Rail System Equipped with a Piston Amplifier, Journal of Fluids Engineering, 127, 6, 2005. Crossref
-
Payri Raul, Araneo Lucio, Shakal Joseph, Soare Vlad, Phase doppler measurements: system set-up optimization for characterization of a diesel nozzle, Journal of Mechanical Science and Technology, 22, 8, 2008. Crossref
-
Araneo L, Soare V, Payri R, Shakal J, Setting up a PDPA system for measurements in a Diesel spray, Journal of Physics: Conference Series, 45, 2006. Crossref
-
Sittiwong W., Pianthong K., Seehanam W., Milton B. E., Takayama K., Effects of chamber temperature and pressure on the characteristics of high speed diesel jets, Shock Waves, 22, 3, 2012. Crossref
-
Akafuah Nelson K., Salazar Abraham J., Saito Kozo, Infrared thermography-based visualization of droplet transport in liquid sprays, Infrared Physics & Technology, 53, 3, 2010. Crossref
-
Seehanam W., Pianthong K., Sittiwong W., Milton B. E., Takayama K., Investigation on the generation process of impact-driven high-speed liquid jets using a CFD technique, Shock Waves, 22, 5, 2012. Crossref
-
Labs J. E., Parker T. E., Multiple-scattering effects on infrared scattering measurements used to characterize droplet size and volume fraction distributions in diesel sprays, Applied Optics, 44, 28, 2005. Crossref
-
Abraham John, Critical observations on the modeling of nonreacting and reacting diesel sprays, Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, 229, 11, 2015. Crossref
-
Akafuah Nelson K., Automotive Paint Spray Characterization and Visualization, in Automotive Painting Technology, 2013. Crossref
-
Martinez Gabrielle L, Poursadegh Farzad, Magnotti Gina M, Matusik Katarzyna E, Duke Daniel J, Knox Benjamin W, Kastengren Alan L, Powell Christopher F, Genzale Caroline L, Measurement of Sauter mean diameter in diesel sprays using a scattering–absorption measurement ratio technique, International Journal of Engine Research, 20, 1, 2019. Crossref
-
Poursadegh Farzad, Bibik Oleksandr, Yraguen Boni, Genzale Caroline L, A multispectral, extinction-based diagnostic for drop sizing in optically dense diesel sprays, International Journal of Engine Research, 21, 1, 2020. Crossref