Experimental study of buoyant vortex rings

1983 ◽  
Vol 24 (1) ◽  
pp. 16-21 ◽  
Author(s):  
B. I. Zaslavskii ◽  
I. M. Sotnikov
Keyword(s):  
Experimental Study ◽  
Vortex Rings ◽  
Buoyant Vortex Rings

Laminar to Turbulent Buoyant Vortex Ring Regime in Terms of Reynolds Number, Bond Number, and Weber Number

2018 ◽  
Vol 140 (5) ◽  
Author(s):  
Xueying Yan ◽  
Rupp Carriveau ◽  
David S. K. Ting
Keyword(s):  
Reynolds Number ◽  
Vortex Ring ◽  
Weber Number ◽  
High Speed ◽  
Reynolds Numbers ◽  
Bond Number ◽  
Vortex Rings ◽  
Transition Regime ◽  
Turbulent Vortex ◽  
Buoyant Vortex Rings

When buoyant vortex rings form, azimuthal disturbances occur on their surface. When the magnitude of the disturbance is sufficiently high, the ring will become turbulent. This paper establishes conditions for categorization of a buoyant vortex ring as laminar, transitional, or turbulent. The transition regime of enclosed-air buoyant vortex rings rising in still water was examined experimentally via two high-speed cameras. Sequences of the recorded pictures were analyzed using matlab. Key observations were summarized as follows: for Reynolds number lower than 14,000, Bond number below 30, and Weber number below 50, the vortex ring could not be produced. A transition regime was observed for Reynolds numbers between 40,000 and 70,000, Bond numbers between 120 and 280, and Weber number between 400 and 800. Below this range, only laminar vortex rings were observed, and above, only turbulent vortex rings.

An experimental study of viscous vortex rings

1996 ◽  
Vol 21 (5) ◽  
pp. 315-324 ◽  
Author(s):  
M. Dziedzic ◽  
H. J. Leutheusser
Keyword(s):  
Experimental Study ◽  
Vortex Rings

Drag of buoyant vortex rings

2015 ◽  
Vol 92 (4) ◽  
Author(s):  
Ahmadreza Vasel-Be-Hagh ◽  
Rupp Carriveau ◽  
David S.-K. Ting ◽  
John Stewart Turner
Keyword(s):  
Vortex Rings ◽  
Buoyant Vortex Rings

scholarly journals Experimental study of low inertia vortex rings in shear-thinning fluids

2018 ◽  
Vol 30 (11) ◽  
pp. 113103 ◽  
Author(s):  
O. Bentata ◽  
D. Anne-Archard ◽  
P. Brancher
Keyword(s):  
Experimental Study ◽  
Shear Thinning ◽  
Vortex Rings ◽  
Shear Thinning Fluids
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