Experimental study of the Ohnesorge number effect on the size of droplets formed as a result of the jet capillary breakup

Bondareva, N. V.; Grigoriev, A. L.; Korovin, T. G.; Коротеев, А. А.; Safronov, A. A.; Skorobogatko, T. D.; Filatov, N. I.; Khlynov, A. V.

doi:10.1134/s0869864319050093

Cited by 8 publications

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“…The liquid jet is unstable with respect to long-wave perturbations of its surface. This phenomenon is used to generate droplet flows in many technical applications, including chemical technology [1,2], heat removal systems [3][4][5][6], inkjet printers [7][8][9], engine nozzles [10][11][12][13], etc. For theoretical modeling of the process of capillary disintegration of jets into drops, approximate quasi-one-dimensional equations are used, obtained by asymptotic expansion of the system of Navier -Stokes equations.…”

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confidence: 99%

Investigation of the Structure of Waves Generated by a $\delta$-perturbation of the Surface of a Capillary Jet

Safronov¹

2022

Nelin. Dinam.

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The wave capillary flow of the surface of an inviscid capillary jet, initiated by a single $\delta$-perturbation of its surface, is studied. It is shown that the wave pattern has a complex structure. The perturbation generates both fast traveling damped waves and a structure of nonpropagating exponentially growing waves. The structure of self-similar traveling waves is investigated. It is shown that there are three independent families of such self-similar solutions. The characteristics of the structure of nonpropagating exponentially growing waves are calculated. The characteristic time of formation of such a structure is determined.

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