Detailed numerical simulations of the primary atomization of a turbulent liquid jet in crossflow

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Scopus citations

Abstract

This paper presents numerical simulation results of the primary atomization of a turbulent liquid jet injected into a gaseous crossflow. Simulations are performed using the balanced force Refined Level Set Grid method. The phase interface during the initial breakup phase is tracked by a level set method on a separate refined grid. A balanced force finite volume algorithm together with an interface projected curvature evaluation is used to ensure the stable and accurate treatment of surface tension forces even on small scales. Broken off, small scale nearly spherical drops are transferred into a Lagrangian point particle description allowing for full two-way coupling and continued secondary atomization. The numerical method is applied to the simulation of the primary atomization region of a turbulent liquid jet (q=6.6, We=330, Re=14,000) injected into a gaseous cross-flow (Re=570,000), analyzed experimentally by Brown and Mc-Donell (2006). The simulations take the actual geometry of the injector into account. Grid converged simulation results of the jet penetration agree well with experimentally obtained correlations. Both column/bag breakup and shear/ligament breakup modes can be observed on the liquid jet. A grid refinement study shows that on the finest employed grids (flow solver 64 points per injector diameter, level set solver 128 points per injector diameter), grid converged drop sizes are achieved for drops as small as one-hundredth the size of the injector diameter.

Original languageEnglish (US)
Title of host publicationProceedings of the ASME Turbo Expo 2009
Subtitle of host publicationPower for Land, Sea and Air
Pages455-464
Number of pages10
DOIs
StatePublished - Dec 1 2009
Event2009 ASME Turbo Expo - Orlando, FL, United States
Duration: Jun 8 2009Jun 12 2009

Publication series

NameProceedings of the ASME Turbo Expo
Volume2

Other

Other2009 ASME Turbo Expo
CountryUnited States
CityOrlando, FL
Period6/8/096/12/09

ASJC Scopus subject areas

  • Engineering(all)

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    Herrmann, M. (2009). Detailed numerical simulations of the primary atomization of a turbulent liquid jet in crossflow. In Proceedings of the ASME Turbo Expo 2009: Power for Land, Sea and Air (pp. 455-464). (Proceedings of the ASME Turbo Expo; Vol. 2). https://doi.org/10.1115/GT2009-59563