Abstract:
This paper describes an experimental study of the properties of vortex rings with variation of parameters of the air jet expelled from a round nozzle by a special device. Characteristics of the vortex rings were determined by hot-wire anemometer measurements of the velocity field at a certain distance from the nozzle exit where vortex formation is presumably completed. A mathematical model for the formation of a vortex ring based on conservation laws is proposed, and a comparison of theoretical results with experimental data is given.
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