Abstract: The rise of a toroidal bubble in water obtained by injecting a pulsed jet of air into the water through a nozzle vertically upwards has been experimentally investigated. It was found that, despite the decrease in the cross-section of the toroidal bubble during the ascent, its radius grows linearly depending on the distance traveled, as in the case of self-similar vortex rings. The coefficient of expansion of the bubble at different volumes of injected air is determined. A comparison was made with toroidal bubbles obtained when balloons burst under water. A qualitative explanation of the observed differences is given. Keywords: vortex ring, toroidal bubble.

Cite: Nikulin V.V. , Chashnikov E.A.
Spreading rate of a toroidal air bubble in water
Technical Physics Letters. 2022. V.48. N7. P.40-42. DOI: 10.21883/TPL.2022.07.54036.19241 РИНЦ OpenAlex

Original: Никулин В.В. , Чашников Е.А.
Коэффициент расширения тороидального воздушного пузыря в воде
Письма в журнал технической физики. 2022. V.48. N13. P.46-48. DOI: 10.21883/pjtf.2022.13.52745.19241 РИНЦ OpenAlex

Identifiers:

Elibrary:	59056741
OpenAlex:	W4318001898

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