68th Annual Meeting of the APS Division of Fluid Dynamics (November 22, 2015 — November 24, 2015)

V0051: Primary breakup of planar coflowing gas and liquid sheets

Authors

• Yue Ling, Institut Jean Le Rond d’Alembert, Sorbonne Universités-UPMC (Univ Paris 6) & CNRS, Paris, France
• Daniel Fuster, Institut Jean Le Rond d’Alembert, Sorbonne Universités-UPMC (Univ Paris 6) & CNRS, Paris, France
• Gretar Tryggvason, Department of Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, United States
• Ruben Scardovelli, Lab. di Montecuccolino, Università di Bologna, Bologna, Italy
• Stéphane Zaleski, Institut Jean Le Rond d’Alembert, Sorbonne Universités-UPMC (Univ Paris 6) & CNRS, Paris, France

DOI: https://doi.org/10.1103/APS.DFD.2015.GFM.V0051

Primary breakup of coflowing gas and liquid sheets is an important fluid dynamics problem which can been seen in many industrial applications like fuel injection. A solid understanding of spray formation through fuel injection systems is vital to improve the energy utilization efficiency and pollution control. In the present work, large-scale three-dimensional  simulations are performed to investigate the breakup of coflowing gas and liquid sheets, using 2,048 processors on the supercomputer. The simulation results reveal the complex multi-scale multiphase flow features that are originally unclear. The detailed formation of the droplets through the breakup of the liquid sheet can be clearly seen from the video.