TY - JOUR

T1 - Bifurcation of a liquid micro-jet in a vacuum

AU - Yaskin, A. S.

AU - Zarvin, A. E.

AU - Dubrovin, K. A.

AU - Kalyada, V. V.

N1 - Funding Information: The work was performed using the shared equipment center "Applied physics" of the NSU Physics Department with the financial support from the Ministry of Science and Higher Education of the Russian Federation (project number FSUS-2020-0039 ) and RFBR (grant number 20-01-00332 ). The authors thank the anonymous reviewers for their motivating comments which helped in revising the manuscript. Publisher Copyright: © 2022 Elsevier Ltd

PY - 2022/4

Y1 - 2022/4

N2 - The horizontal outflow of liquid from micro-holes in a thin wall into a rarefied medium with a controlled degree of pressure drop is investigated. An azeotropic mixture of ethanol and water was used as a working fluid. With the help of photographic and video equipment, changes in the parameters of the flow of a liquid jet were recorded: the deflection of the flow of an overheated micro-jet against the force of gravity, the appearance of bifurcation points with the formation of several jet two-phase flows, and explosive decay of the jet flow. Possible reasons for the observed effects due to capillary-pressure instability of superheated ethanol micro-flows are discussed.

AB - The horizontal outflow of liquid from micro-holes in a thin wall into a rarefied medium with a controlled degree of pressure drop is investigated. An azeotropic mixture of ethanol and water was used as a working fluid. With the help of photographic and video equipment, changes in the parameters of the flow of a liquid jet were recorded: the deflection of the flow of an overheated micro-jet against the force of gravity, the appearance of bifurcation points with the formation of several jet two-phase flows, and explosive decay of the jet flow. Possible reasons for the observed effects due to capillary-pressure instability of superheated ethanol micro-flows are discussed.

KW - Bifurcation point

KW - Capillary-pressure instability

KW - Caverns

KW - Cavitation

KW - Ethanol

KW - Micro-jet

KW - Two-phase flows

KW - Vacuum

UR - http://www.scopus.com/inward/record.url?scp=85123679741&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/f0e6e8a8-c28b-33a1-b769-bf3dfb431c4b/

U2 - 10.1016/j.vacuum.2022.110904

DO - 10.1016/j.vacuum.2022.110904

M3 - Article

AN - SCOPUS:85123679741

VL - 198

JO - Vacuum

JF - Vacuum

SN - 0042-207X

M1 - 110904

ER -