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Atomization and Sprays
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ISSN Druckformat: 1044-5110
ISSN Online: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v9.i2.10
pages 111-132

SCALING OF SPRAY PENETRATION WITH EVAPORATION

Yuepeng Wan
Department of Materials Science and Engineering, State University of New York at Stony Brook, New York, USA
Norbert Peters
Department of Combustion Technology RWTH Aachen University Templergraben 64, 52056 Aachen, Germany

ABSTRAKT

The penetration of fuel spray under diesel engine conditions was calculated by solving the cross-sectionally averaged equations for unsteady two-phase flow. The effects of a variety of processes in the spray, e.g., air entrainment and droplet evaporation, on spray penetration are analyzed through the corresponding nondimensional parameters. The integrated two-phase flow equation system can further be simplified with the approximation of equal gas and liquid velocities, which are reached after a short atomization region for a complete spray. A closed-form solution for the penetration length was derived from the system of integrated equations using the quasi-steady-state assumption. This solution is compared with the well-known Wakuri correlation and the Hiroyasu correlation. The expression of the spray tip and droplet penetration lengths are also deduced for nonconstant injection velocity. The effects of ambient air density and droplet evaporation rate on spray penetration were investigated numerically, and the numerical results agree very well with many experiments from the literature.


Articles with similar content:

LINKING NOZZLE FLOW WITH SPRAY CHARACTERISTICS IN A DIESEL FUEL INJECTION SYSTEM
Atomization and Sprays, Vol.8, 1998, issue 3
Manolis Gavaises, C. Arcoumanis
AN EXPERIMENTAL AND ANALYTICAL STUDY OF THE SPRAY CHARACTERISTICS OF AN INTERMITTENT AIR-ASSISTED FUEL INJECTOR
Atomization and Sprays, Vol.10, 2000, issue 2
Sangmin Choi, Changsoo Jang, Sung-Soo Kim
NUMERICAL ANALYSIS OF THE INFLUENCE OF THE JET BREAKUP MODEL FORMULATION ON DIESEL ENGINE COMBUSTION COMPUTATIONS
Atomization and Sprays, Vol.8, 1998, issue 2
M. C. Cameretti, C. Bertoli, P. Belardini
ASSESSMENT OF ATOMIZATION MODELS FOR DIESEL ENGINE SIMULATIONS
Atomization and Sprays, Vol.19, 2009, issue 9
S. Som, Suresh Aggarwal
MODELING OF GROUP-HOLE-NOZZLE SPRAYS USING GRID-SIZE-, HOLE-LOCATION-, AND TIME-STEP-INDEPENDENT MODELS
Atomization and Sprays, Vol.19, 2009, issue 6
Rolf D. Reitz, Chang Sik Lee, Neerav Abani, Sung Wook Park, Hyun Kyu Suh