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dc.contributor.authorGhasemi, Abbas
dc.contributor.authorLi, Xianguo 14:12:43 (GMT) 14:12:43 (GMT)
dc.descriptionThe final publication is available at Springer via
dc.description.abstractThe impact process and the consequent two-phase interaction for a compressible subsonic starting gas jet colliding on a multi-plume spray are investigated using large eddy simulation with Eulerian/Lagrangian multiphase approach, and the λ 2 criterion is used to visualize the temporal and spatial evolution of the vortical structures in the gas field. It is shown that before the impact a leading tip vortex ring is followed by smaller vortex rings in the quasi-steady region of the starting jet while the vortical structures inside the spray plumes known as spray-induced air jets are formed. After the impact the leading tip vortex ring and the following rings as well as spray-induced air jet vortices start to deform and eventually break down into smaller elongated vortex filaments. Unlike the injection of multi-plume sprays into the core of a steady cross flow gas jet, spray droplets are dispersed in a larger volume in all directions when impacted by the starting gas jet, beneficial for two-phase mixing enhancement. A pair of vortex rings is also observed merging into a new ring before reaching the impact zone.Graphical abstract Open image in new windowen
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada ["Discovery Grant"]en
dc.subjectLarge eddy simulation (LES)en
dc.subjectStarting jeten
dc.subjectVortex ringen
dc.titleVortex break-down during the impact of a starting subsonic compressible gas jet on a multi-plume sprayen
dcterms.bibliographicCitationGhasemi, A., & Li, X. (2016). Vortex break-down during the impact of a starting subsonic compressible gas jet on a multi-plume spray. Journal of Visualization, 19(4), 679–689. doi:10.1007/s12650-016-0345-yen
uws.contributor.affiliation1Faculty of Engineeringen
uws.contributor.affiliation2Mechanical and Mechatronics Engineeringen

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