Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session Q10: Multiphase Flows: General
12:50 PM–3:26 PM,
Tuesday, November 20, 2018
Georgia World Congress Center Room: B215
Chair: Abhinandan Chowdhury, Savannah State University
Abstract ID: BAPS.2018.DFD.Q10.6
Abstract: Q10.00006 : Numerical simulations of acoustically excited spray atomization*
1:55 PM–2:08 PM
The efficiency of a gas turbine is largely dependent on the combustion process between the liquid fuel and the oxidizer. The mixing of the the fuel vapours and the incoming air is critical to the combustion process, and the primary factor affecting vaporization is the atomization of the fuel spray. Experiments  have shown that high-amplitude acoustic waves are effective in controlling breakup and enhancing atomization of liquid sprays. We perform numerical simulations to investigate the dynamics of spray breakup of a water jet in the presence of transverse, standing acoustic waves. In agreement with experiments, it is observed that high-amplitude sound waves ~170 dB can have a significant effect on spray atomization. The jet location along the standing wave generated in the chamber is found to be a major factor affecting breakup and atomization. The compressible flow equations are solved, and the multiphase treatment uses a Volume of Fluid (VOF) approach with a piecewise linear interface calculation (PLIC) for the interface reconstruction.
 Ficuciello, A., Blaisot, J., Richard, C., and Baillot, F. Physics of Fluids, 29(6):067103, 2017.
*We acknowledge the Office of Naval Research, Air Force Research Laboratories and Taitech, Inc. for supporting this work.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.Q10.6
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