Erscheint 12 Ausgaben pro Jahr
ISSN Druckformat: 1044-5110
ISSN Online: 1936-2684
Indexed in
INVESTIGATION OF A COAXIAL AIR-BLAST ATOMIZER USING PARTICLE IMAGE VELOCIMETRY AND COMPUTATIONAL FLUID DYNAMICS
ABSTRAKT
Particle image velocimetry and FLUENT 6 computational fluid dynamics software were used to investigate single- and two-phase flow issuing from a coaxial air-blast atomizer. For a single-phase gaseous jet flowing through an annulus, the centerline velocity decays at a rate that is similar to a gaseous jet issuing from a circular orifice, beyond about 10 diameters downstream, and dimensionless axial velocity profiles are self-similar and in good agreement with the gaseous jet. In the case of a two-phase jet generated by an air-blast atomizer with mass loading between 0.2 and 0.35, the dispersed phase centerline velocity increases rapidly due to interaction with the annular gas flow and then decays at a rate that is slightly slower than a gaseous jet. The dispersed phase axial velocity profiles also compare well with that of a gaseous jet. Dispersed phase velocities determined using an Eulerian-Eulerian numerical model agree to within 10% of the experimental data about one diameter downstream.
-
Duangkhamchan W., Ronsse F., Depypere F., Dewettinck K., Pieters J.G., CFD study of droplet atomisation using a binary nozzle in fluidised bed coating, Chemical Engineering Science, 68, 1, 2012. Crossref
-
Fisher Brian T., Weismiller Michael R., Tuttle Steven G., Hinnant Katherine M., Effects of Fluid Properties on Spray Characteristics of a Flow-Blurring Atomizer, Journal of Engineering for Gas Turbines and Power, 140, 4, 2018. Crossref
-
Mohammadi Alireza, Ommi Fathollah, Saboohi Zoheir, Experimental and numerical study of a twin-fluid two-phase internal-mixing atomizer, Journal of Thermal Analysis and Calorimetry, 147, 5, 2022. Crossref