Fuel Injector: Air Swirl Characterization Aerothermal Modeling, Phase 2, Volume 1 PDF Download
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Languages : en
Pages : 418
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Author:
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ISBN:
Category :
Languages : en
Pages : 418
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781724222947
Category :
Languages : en
Pages : 418
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A well integrated experimental/analytical investigation was conducted to provide benchmark quality relevant to a prefilming type airblast fuel nozzle and its interaction with the combustor dome air swirler. The experimental investigation included a systematic study of both single-phase flows that involved single and twin co-axial jets with and without swirl. A two-component Phase Doppler Particle Analyzer (PDPA) was used to document the interaction of single and co-axial air jets with glass beads that simulate nonevaporating spray and simultaneously avoid the complexities associated with fuel atomization processes and attendant issues about the specification of relevant boundary conditions. The interaction of jets with methanol spray produced by practical airblast nozzle was also documented in the spatial domain of practical interest. Model assessment activities included the use of three turbulence models (k-epsilon, algebraic second moment (ASM), and differential second moment (DSM)) for the carrier phase, deterministic or stochastic Lagrangian treatment of the dispersed phase, and advanced numerical schemes. Although qualitatively good comparison with data was obtained for most of the cases investigated, the model deficiencies in regard to modeled dissipation rate transport equation, single length scale, pressure-strain correlation, and other critical closure issues need to be resolved before one can achieve the degree of accuracy required to analytically design combustion systems. Nikjooy, M. and Mongia, H. C. and Mcdonell, V. G. and Samuelsen, G. S. Glenn Research Center NASA-CR-189193-VOL-1, E-7593-VOL-1, NAS 1.26:189193-VOL-1 NAS3-24350; RTOP 505-62-52...
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Languages : en
Pages : 312
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Category : Aeronautics
Languages : en
Pages : 836
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Category :
Languages : en
Pages : 402
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Category : Aeronautics
Languages : en
Pages : 492
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Category : Power resources
Languages : en
Pages : 760
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Category : Aircraft gas-turbines
Languages : en
Pages : 492
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Category : Science
Languages : en
Pages : 712
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Category : Government publications
Languages : en
Pages :
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