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 injected into a gaseous crossflow , analyzed experimentally by Brown and McDonell (2006, “Near Field Behavior of a Liquid Jet in a Crossflow,” ILASS Americas, 19th Annual Conference on Liquid Atomization and Spray Systems). 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.
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June 2010
Research Papers
Detailed Numerical Simulations of the Primary Atomization of a Turbulent Liquid Jet in Crossflow
Marcus Herrmann
Marcus Herrmann
Department of Mechanical and Aerospace Engineering,
e-mail: marcus.herrmann@asu.edu
Arizona State University
, Tempe, AZ 85287
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Marcus Herrmann
Department of Mechanical and Aerospace Engineering,
Arizona State University
, Tempe, AZ 85287e-mail: marcus.herrmann@asu.edu
J. Eng. Gas Turbines Power. Jun 2010, 132(6): 061506 (10 pages)
Published Online: March 30, 2010
Article history
Received:
May 5, 2009
Revised:
May 6, 2009
Published:
March 30, 2010
Citation
Herrmann, M. (March 30, 2010). "Detailed Numerical Simulations of the Primary Atomization of a Turbulent Liquid Jet in Crossflow." ASME. J. Eng. Gas Turbines Power. June 2010; 132(6): 061506. https://doi.org/10.1115/1.4000148
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