Bifurcation of a liquid micro-jet in a vacuum

Yaskin, A. S.; Zarvin, A. E.; Dubrovin, K. A.; Kalyada, V. V.

doi:10.1016/j.vacuum.2022.110904

Cited by 3 publications

(4 citation statements)

References 37 publications

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“…The scale for all images is the same. However, the vertical micro-flows of ethanol from the capillary presented here are more unstable and have a variety of flow forms in comparison with the vertical micro-streams studied earlier [13][14]. This is due to the use of capillaries of various cross sections in this work.…”

Section: Resultsmentioning

confidence: 78%

“…The present work is a continuation of the studies of the volatile liquid outflow into a vacuum, begun in [13][14]. The instability of the outflow of a volatile liquid into vacuum, the formation of complex curvilinear flow forms, the absence of models describing the causes and consequences of such processes, discovered in previous works, require experimenters to collect the most detailed and complete information when varying the initial parameters to search for although would be quantitative factors influencing the process.…”

Section: Resultsmentioning

confidence: 99%

“…This is due to the use of capillaries of various cross sections in this work. In [13][14], a capillary with a hole diameter d* = 0.4 mm and an elongation L/d* = 63 was used, with jet flows of which one can compare flows from capillary k2, which has relatively close geometric characteristics. Accordingly, the flows from these capillaries have the greatest similarity in terms of the forms formed and their behavior during outflow.…”

Section: Resultsmentioning

confidence: 99%

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Formation of volatile liquid jets in a rarefied medium

Yaskin,

Zarvin,

Kalyada

et al. 2023

E3S Web Conf.

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The external signs and conditions for the occurrence of sudden changes in the direction of ethanol micro-jets during vertical, from top to bottom, outflow from small-diameter capillaries into a rarefied medium (vacuum) are considered. A brief description of the equipment used, the organization of liquid preparation for the experiment, and the control of parameters are given. With the help of photo and video equipment, sudden transitions from dark areas of the jet to light ones and vice versa, stratification of the liquid jet into two, three or more fan streams, i.e. bifurcation. It is shown that with a decrease in the diameter of the capillary opening, the jet outflow is more stable, and the flow can retain its shape for a relatively long period of time. The process established by other researchers of the flow of liquid drops up the capillary has been confirmed. The reliability of the obtained results was verified by comparison with the known data by organizing the outflow from the same capillaries into the atmosphere.

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Section: Resultsmentioning

confidence: 78%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Formation of volatile liquid jets in a rarefied medium

Yaskin,

Zarvin,

Kalyada

et al. 2023

E3S Web Conf.

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“…The horizontal and vertical outflow of liquid from holes and small-diameter capillaries into vacuum over a long period of time was considered [34][35]. Unstable flow regimes in time and space, spontaneous intervals of unexpectedly long preservation of the flow structure, effects of flow deflection against gravitational forces (Fig.…”

Section: Outflow Of An Inviscid Fluid Into Vacuummentioning

confidence: 99%

Modeling supersonic rarefied jets on experimental cluster at Novosibirsk State University

Zarvin,

Dubrovin,

Kalyada

et al. 2023

E3S Web Conf.

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A review of the experimental work carried out on the vacuum gas-dynamic stands of the Applied Physics Department of the Novosibirsk State University is presented. Creation of these stands meeting the world’s requirements and equipped with modern diagnostic methods was based on the background experience from the Institute of Thermophysics of the Siberian Branch of the Russian Academy of Sciences under the guidance of A.K. Rebrov. A brief description of the stands and the results of some studies is given. Despite the limited possibilities of the university environment, the use of compact laboratory vacuum stands provides large-scale studies in various areas of rarefied gas dynamics.

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