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Atomization and Sprays
Facteur d'impact: 1.262 Facteur d'impact sur 5 ans: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 1.6

ISSN Imprimer: 1044-5110
ISSN En ligne: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v16.i4.60
pages 443-474

SCALING LAWS FOR FREE TURBULENT GAS JETS AND DIESEL-LIKE SPRAYS

Jose M. Desantes
CMT-Motores Termicos, Universitat Politecnica de Valencia, 46022, Spain
Jean Arregle
CMT-Motores Térmicos, Universidad Politécnica de Valencia, Camino de Vera, s/n. 46022 Valencia, Spain
J. Javier Lopez
CMT-Motores Térmicos, Universidad Politécnica de Valencia, Camino de Vera, s/n. 46022 Valencia, Spain
Andreas Cronhjort
Scania CVAB, Advanced Combustion. Engine Development, SE - 151 87 Södertälje, Sweden

RÉSUMÉ

Scaling laws for free turbulent gas jets and diesel-like sprays are deduced and experimentally validated. The analysis is based on basic conservation equations and experimental evidence. As a new contribution, the effect of the Schmidt number on the scaling laws is analyzed and included, which leads to a more general set of normalized parameters. By analyzing the scaling laws, it is possible to obtain a clear comprehension of gas-jet or diesel-spray behavior, as well as an understanding of the relationship between input and output parameters. Two new parameters are introduced that characterize mass and momentum transfer in the radial direction of the gas jet or diesel spray, thus providing valuable information about the mixing process.


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