Bifurcation of a liquid micro-jet in a vacuum. (April 2022)

• Record Type: Journal Article
• Authors: Yaskin, A.S.; Zarvin, A.E.; Dubrovin, K.A.; Kalyada, V.V.
• Is Part Of: Vacuum. Volume 198(2022)
• Publication Date: 2022-04
• Subjects: Micro-jet -- Ethanol -- Vacuum -- Two-phase flows -- Caverns -- Bifurcation point -- Cavitation -- Capillary-pressure instability; Vacuum -- Periodicals; 621.55
• DOI: 10.1016/j.vacuum.2022.110904
• Languages: English
• ISSNs: 0042-207X

Abstract

Abstract: 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. Highlights: The horizontal flow of liquid. The rise of horizontally ethanol jets. The thermocapillary instability of the flows.