The process of vortex ring generation and propagation has received substantial treatment in the literature. A common ring generation geometry consists of a piston moving through tube that exits into a ...

ONE of the commonest examples of a vortex phenomenon may be observed in the formation of smoke rings. Detailed studies of the structure of smoke rings were made many years ago by R. W. Wood 1. Smoke ...

What do dolphins, humans and volcanoes have in common? They can all produce toroidal vortices of course! Surprised? Grab some food colour and a glass of water to find out how. 1. Fill a tall glass to ...

Quantized Vortex Rings in Superfluid Helium Vortex rings analogous to smoke rings in air can be produced in liquid helium. They move in strange ways and exhibit discrete quantum effects on a large ...

COLUMBUS, Ohio–Scientists at Battelle have filed a patent application for a device that shoots out rings of gas–an invention that could aid firefighters in suppressing smoke as well as delivering a ...