Interaction of Bubbles with Vortex Ring Launched into Bubble Plume


This study is concerned with an experimental exploration for the interactions of bubbles with a vortex ring launched vertically upward into a bubble plume. A vortex ring launcher, composed of a cylinder and a piston, is mounted at the bottom of a water tank. Small hydrogen bubbles are released into still water from a cathode, which is wound around the cylinder outlet, by the electrolysis of water. The bubbles rise by the buoyant force and induce a bubble plume. The water in the cylinder is discharged into the bubble plume by the piston, resulting in a laminar vortex ring convecting along the central axis of the plume. Just after the launch of the vortex ring, the bubbles are spirally entrained into the vortex ring with the roll up of the shear layer. The void fraction within the vortex ring increases with the convection of the vortex ring until a certain displacement of the vortex ring, where the reduction occurs. The vortex ring convects with a constant velocity higher than that in still water. The entrained bubbles reduce the strength of the vortex ring.

Share and Cite:

T. Uchiyama and S. Kusamichi, "Interaction of Bubbles with Vortex Ring Launched into Bubble Plume," Advances in Chemical Engineering and Science, Vol. 3 No. 4, 2013, pp. 207-217. doi: 10.4236/aces.2013.34027.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] N. A. Hussain and R. Siegel, “Liquid Jet Pumped by Rising Gas Bubbles,” Journal of Fluids Engineering, Vol. 98, No. 1, 1976, pp. 49-57.
[2] A. M. Leitch and W. D. Baines, “Liquid Volume Flux in a Weak Bubble Plume,” Journal of Fluid Mechanics, Vol. 205, No. 1, 1989, pp. 77-98.
[3] J. H. Milgram, “Mean Flow in Round Bubble Plumes,” Journal of Fluid Mechanics, Vol. 133, No. 1, 1983, pp. 345-376.
[4] S. A. Socolofsky and E. E. Adams, “Role of Slip Velocity in the Behavior of Stratified Multiphase Plumes,” Journal of Hydraulic Engineering, Vol. 131, No. 4, 2005, pp. 273-282.
[5] M. Alam and V. H. Arakeri, “Observations on Transition in Plane Bubble Plumes,” Journal of Fluid Mechanics, Vol. 254, No. 1, 1993, pp. 363-374.
[6] T. Uchiyama and S. Matsumura, “Three-Dimensional Vortex Method for the Simulation of Bubbly Flow,” Journal of Fluids Engineering, Vol. 132, No. 10, 2010, pp.1-8.
[7] P. M. Rightley and J. C. Lasheras, “Bubble Dispersion and Interphase Coupling in a Free-Shear Flow,” Journal of Fluid Mechanics, Vol. 412, No. 1, 2000, pp. 21-59.
[8] O. A. Druzhinin and S. E. Elghobashi, “Direct Numerical Simulation of a Three-Dimensional Spatially Developing Bubble-Laden Mixing Layer with Two-Way Coupling,” Journal of Fluid Mechanics, Vol. 429, 2001, pp. 23-61.
[9] X. Yang, N. H. Thomas, L. J. Guo and Y. Hou, “Two-Way Coupled Bubble Laden Mixing Layer,” Chemical Engineering Science, Vol. 57, No. 4, 2002, pp. 555-564.
[10] R. Z. Milenkovic, B. Sigg and G. Yadigaroglu, “Study of Periodically Excited Bubbly Jets by PIV and Double Optical Sensors,” International Journal of Heat and Fluid Flow, Vol. 26, No. 6, 2005, pp. 922-930.
[11] R. Z. Milenkovic, B. Sigg and G. Yadigaroglu, “Bubble Clustering and Trapping in Large Vortices, Part 1: Triggered Bubbly Jets Investigated by Phase Averaging,” International Journal of Multiphase Flow, Vol. 33, No. 10, 2007, pp. 1088-1110.
[12] K. Domon, O. Ishihara and S. Watanabe, “Mass Transport by a Vortex Ring,” Journal of the Physical Society of Japan, Vol. 69, No. 1, 2000, pp. 120-123.
[13] Y. Yanagida, S. Kawato, H. Noma, A. Tomono and N. Tetsutani, “Projection-Based Olfactory Display with Nose Tracking,” Proceedings of IEEE Virtual Reality, 2004, Chicago, pp. 43-50.
[14] H. Yagami and T. Uchiyama, “Numerical Simulation for the Transport of Solid Particles with a Vortex Ring,” Advanced Powder Technology, Vol. 22, No. 1, 2011, pp. 115-123.
[15] T. Uchiyama, “Three-Dimensional Vortex Simulation of Bubble Dispersion in Excited Round Jet,” Chemical Engineering Science, Vol. 59, No. 7, 2004, pp. 1403-1413.
[16] G. Sridhar and J. Katz, “Drag and Lift Forces on Microscopic Bubbles Entrained by a Vortex,” Physics of Fluids, Vol. 7, No. 2, 1995, pp. 389-399.
[17] G. Sridhar and J. Katz, “Effect of Entrained Bubbles on the Structure of Vortex Rings,” Journal of Fluid Mechanics, Vol. 397, 1999, pp. 171-202.
[18] A. Glezer, “The Formation of Vortex Rings,” Physics of Fluids, Vol. 31, No. 12, 1988, pp. 3532-3542.
[19] M. Gharib, E. Rambod and K. Shariff, “A Universal Time Scale for Vortex Ring Formation,” Journal of Fluid Mechanics, Vol. 360, 1998, pp. 121-140.
[20] G. R. Ruetsch and E. Meiburg, “Two-Way Coupling in Shear Layers with Dilute Bubble Concentrations,” Physics of Fluids, Vol. 6, No. 8, 1994, pp. 2656-2670.

Copyright © 2021 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.