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Doubly-excited pulse waves on thin liquid films flowing down an inclined plane: An experimental and numerical study

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Title: Doubly-excited pulse waves on thin liquid films flowing down an inclined plane: An experimental and numerical study
Authors: Adebayo, I
Xie, Z
Che, Z
Matar, O
Item Type: Journal Article
Abstract: The interaction patterns between doubly excited pulse waves on thin liquid films flowing down an inclined plane are studied both experimentally and numerically. The effect of varying the film flow rate, interpulse interval, and substrate inclination angle on the pulse interaction patterns is examined. Our results show that different interaction patterns exist for these binary pulses, which include solitary wave behavior, partial or complete pulse coalescence, and pulse noncoalescence. A regime map of these patterns is plotted for each inclination angle examined, parametrized by the film Reynolds number and interpulse interval. Finally, the individual effect of the system parameters mentioned above on the coalescence distance of binary pulses in the “complete pulse coalescence” mode is studied; the results are compared to numerical simulations of the two-dimensional Navier-Stokes equations yielding good agreement.
Issue Date: 27-Jul-2017
Date of Acceptance: 31-May-2017
URI: http://hdl.handle.net/10044/1/48870
DOI: https://dx.doi.org/10.1103/PhysRevE.96.013118
ISSN: 1539-3755
Publisher: American Physical Society
Journal / Book Title: Physical Review E
Volume: 96
Copyright Statement: © 2017 The Authors. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/K003976/1
Keywords: Fluids & Plasmas
01 Mathematical Sciences
02 Physical Sciences
09 Engineering
Publication Status: Published
Article Number: 013118
Appears in Collections:Faculty of Engineering
Chemical Engineering
Faculty of Natural Sciences



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