Publicou 12 edições por ano
ISSN Imprimir: 1044-5110
ISSN On-line: 1936-2684
Indexed in
STUDY OF AMBIENT TURBULENCE EFFECTS ON DIESEL SPRAYS IN A FAN-STIRRED VESSEL
RESUMO
This study investigates the influence of the ambient turbulence on a pressure-atomized diesel-like spray in the well-characterized and controlled turbulence flow field of a fan-stirred experimental vessel. Injections were performed into nitrogen at 15 bar and 400 K under four turbulent conditions, with RMS velocities ranging from 0.5 up to 5.5 m/s. Mie scatter laser sheet and Schlieren techniques were applied to visualize the liquid and the vapor phase of the spray. With increasing turbulence, there was increasing formation of droplet clusters and ligaments, which resulted in a reduced detection of droplet vapor along the whole penetration length of the spray. From considerations of the Stokes numbers for the droplet-turbulence interaction, it is concluded that the microlength scales of the ambient turbulence were the probable source of this droplet clustering.
-
Elbadawy Ibrahim, Gaskell Philip H., Lawes Malcolm, Thompson Harvey M., Numerical investigation of the effect of ambient turbulence on pressure swirl spray characteristics, International Journal of Multiphase Flow, 77, 2015. Crossref
-
Aleiferis P. G., van Romunde Z. R., Larson G., Lawes M., Sheppard C. G. W., On the Effect of Ambient Turbulence and Thermodynamic Conditions on Fuel Spray Development for Direct-Injection Spark-Ignition Engines, Flow, Turbulence and Combustion, 95, 1, 2015. Crossref