每年出版 12 期
ISSN 打印: 1044-5110
ISSN 在线: 1936-2684
Indexed in
A DISCRETE MULTICOMPONENT FUEL MODEL
摘要
Equations are derived for multicomponent fuel evaporation of airborne fuel droplets and wall films, and are implemented as a multicomponent fuel modelinto KIVA-3V. Temporal and spatial variations in liquid droplet composition and temperature are not modeled but solved for by discretizing the interior of the droplet in an implicit and computationally efficient way. We find that an interior discretization is necessary to compute the evolution of the droplet composition correctly. This is because an interior discretization gives significantly improved results for the evolution of droplet compositions and temperatures over the alternatives of using infinite diffusivities or of using correlations based on the differences between surface and average values. Numerical simulations of the evaporation of single droplets, axisymmetric sprays, and sprays in 3-D engine geometries demonstrate the need for interior discretization and for using a multicomponent fuel model in gasoline spray simulations.
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Perini Federico, Busch Stephen, Zha Kan, Reitz Rolf, Kurtz Eric, Piston Bowl Geometry Effects on Combustion Development in a High-Speed Light-Duty Diesel Engine, SAE Technical Paper Series, 1, 2019. Crossref
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Perini Federico, Busch Stephen, Kurtz Eric, Warey Alok, Peterson Richard C., Reitz Rolf, Limitations of Sector Mesh Geometry and Initial Conditions to Model Flow and Mixture Formation in Direct-Injection Diesel Engines, SAE Technical Paper Series, 1, 2019. Crossref
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Perini Federico, Busch Stephen, Reitz Rolf Deneys, Investigation of post-injection strategies for diesel engine Catalyst Heating Operation using a vapor-liquid-equilibrium-based spray model, The Journal of Supercritical Fluids, 167, 2021. Crossref
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Perini Federico, Busch Stephen, Reitz Rolf, Wu Angela, Parallel Load Balancing Strategies for Mesh-Independent Spray Vaporization and Collision Models, SAE Technical Paper Series, 1, 2021. Crossref