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ISSN 打印: 1044-5110

ISSN 在线: 1936-2684

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Indexed in

AN EULERIAN-LAGRANGIAN SPRAY AND ATOMIZATION MODEL WITH IMPROVED TURBULENCE MODELING

卷 19, 册 8, 2009, pp. 727-739
DOI: 10.1615/AtomizSpr.v19.i8.20
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摘要

An Eulerian-Lagrangian spray and atomization (ELSA) model for high-pressure diesel sprays has been developed in this study. The new model is based on the assumption that the high-pressure diesel spray and atomization process can be described by considering a single effective phase of liquid-gas mixture to represent the turbulent mixing of a liquid jet with ambient gases. A switch from the Eulerian approach to the Lagrangian approach is made beyond the dense spray region near the nozzle. It has long been recognized that the standard kε turbulence model underpredicts the penetration and overpredicts the spreading rate of high-speed free jets. To correct for these effects, several previously proposed techniques are used to correct for vortex stretching and compressibility effects in high-speed free jets in this study. The turbulence model modifications were applied to high-speed gas and liquid jets, and incorporated into the ELSA model to simulate the high-speed diesel spray and atomization process.

对本文的引用
  1. Salvador Francisco Javier, Gimeno Jaime, Pastor José Manuel, Martí-Aldaraví Pedro, Effect of turbulence model and inlet boundary condition on the Diesel spray behavior simulated by an Eulerian Spray Atomization (ESA) model, International Journal of Multiphase Flow, 65, 2014. Crossref

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  10. Pakseresht Pedram, Apte Sourabh V., Volumetric displacement effects in Euler-Lagrange LES of particle-laden jet flows, International Journal of Multiphase Flow, 113, 2019. Crossref

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  12. Ernst Martin, Sommerfeld Martin, Laín Santiago, Quantification of preferential concentration of colliding particles in a homogeneous isotropic turbulent flow, International Journal of Multiphase Flow, 117, 2019. Crossref

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  14. Gonzalez-Juez Esteban D., Kerstein Alan R., Multiscale modeling of turbulent atomization: Droplet-size sampling, International Journal of Multiphase Flow, 128, 2020. Crossref

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  16. Palanti L., Puggelli S., Langone L., Andreini A., Reveillon J., Duret B., Demoulin F.X., An attempt to predict spray characteristics at early stage of the atomization process by using surface density and curvature distribution, International Journal of Multiphase Flow, 147, 2022. Crossref

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