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Atomization and Sprays
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ISSN Imprimir: 1044-5110
ISSN En Línea: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v10.i3-5.90
pages 409-425

PERSPECTIVES ON LARGE EDDY SIMULATIONS FOR SPRAYS: ISSUES AND SOLUTIONS

Josette Bellan
Department of Mechanical and Civil Engineering, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California, USA

SINOPSIS

A review of the large eddy simulations (LES) methodology is presented in the context of sprays. Issues related to modeling both the drop interaction with the carrier flow and the interaction among drops are discussed. Appropriate direct numerical simulations (DNS) for use as precursors to LES, and the extraction of subgrid scale (SGS) models are both described. Particular attention is devoted to LES aspects which are different from those of single-phase flows. These include the correct portrayal of the drop interaction with small turbulent scales, the modeling of SGS stresses, SGS heat and SGS species fluxes, and the accurate representation in the carrier flow equations of the source terms associated with the presence of the drops. Recommendations for future work are also offered.


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