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Bound-state formation in interfacial turbulence: direct numerical simulations and theory
dc.creator | Pradas, M. | en |
dc.creator | Kalliadasis, S. | en |
dc.creator | Nguyen, P. K. | en |
dc.creator | Bontozoglou, V. | en |
dc.date.accessioned | 2015-11-23T10:46:06Z | |
dc.date.available | 2015-11-23T10:46:06Z | |
dc.date.issued | 2013 | |
dc.identifier | 10.1017/jfm.2012.506 | |
dc.identifier.issn | 0022-1120 | |
dc.identifier.uri | http://hdl.handle.net/11615/32483 | |
dc.description.abstract | We examine pulse interaction and bound-state formation in interfacial turbulence using the problem of a falling liquid film as a model system. We perform direct numerical simulations (DNSs) of the full Navier-Stokes equations and associated wall and free-surface boundary conditions and we examine both analytically and numerically a low-dimensional (LD) model for the film. For a two-pulse system, DNSs reveal the existence of very rich and complex pulse interactions, characterized by either overdamped, underdamped or self-sustained oscillating behaviours, all of them found to be in excellent agreement with LD results. Having demonstrated the reliability of the LD model for two-pulse systems/smaller domains, we use it to investigate larger domains with many interacting pulses, where DNSs are computationally expensive. We demonstrate that such systems are likely to be dominated by a self-sustained oscillatory dynamics. | en |
dc.source | Journal of Fluid Mechanics | en |
dc.source.uri | <Go to ISI>://WOS:000314422800002 | |
dc.subject | instability | en |
dc.subject | interfacial flows (free surface) | en |
dc.subject | thin films | en |
dc.subject | FILM FLOWS | en |
dc.subject | INCLINED PLANES | en |
dc.subject | SOLITARY WAVES | en |
dc.subject | BINARY INTERACTIONS | en |
dc.subject | DYNAMICS | en |
dc.subject | Mechanics | en |
dc.subject | Physics, Fluids & Plasmas | en |
dc.title | Bound-state formation in interfacial turbulence: direct numerical simulations and theory | en |
dc.type | journalArticle | en |
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