Liquid Jet Stability in a Laminar Flow Field
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Date
2002-05
Publication Type
Journal Article
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yes
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Abstract
The breakup of a Newtonian liquid jet into droplets injected horizontally into another flowing immiscible Newtonian fluid was studied experimentally under creeping flow conditions. Different breakup mechanisms take place in different flow regions. No filament is generated at very low velocities of the continuous phase when the droplets peel off directly at the nozzle tip. As soon as the flow rate of the continuous phase exceeds a critical value, a filament of a characteristic length begins to grow. The filament breaks up due to instabilities in terms of developing interfacial waves. The laminar breakup length of the filament is found to correlate with the flow rates of both phases and their viscosity ratio. The impact of the capillary diameter, through which the disperse phase is injected, on the filament length was investigated and the maximum droplet size was estimated.
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Publication status
published
Editor
Book title
Journal / series
Volume
25 (5)
Pages / Article No.
499 - 506
Publisher
Wiley-VCH
Event
Edition / version
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Software
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Date collected
Date created
Subject
Drop formation; Flow field; Liquid jets; Newtonian fluids
Organisational unit
08821 - Fischer, Peter (Tit.-Prof.)
03345 - Windhab, Erich Josef (emeritus) / Windhab, Erich Josef (emeritus)