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  Interfacial roughening in nonideal fluids: Dynamic scaling in the weak- and strong-damping regime

Gross, M., & Varnik, F. (2013). Interfacial roughening in nonideal fluids: Dynamic scaling in the weak- and strong-damping regime. Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, 87(2): 022407. doi:10.1103/PhysRevE.87.022407.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-E3BE-9 Version Permalink: http://hdl.handle.net/21.11116/0000-0001-E3BF-8
Genre: Journal Article

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 Creators:
Gross, Markus1, Author              
Varnik, Fathollah2, 3, Author              
Affiliations:
1Interdisciplinary Centre for Advanced Materials Simulation (ICAMS), Ruhr-Universität Bochum, Universitaetsstr. 90a, 44789 Bochum, Germany, persistent22              
2Interdisciplinary Centre for Advanced Materials Simulation (ICAMS), Ruhr-Universität Bochum, Universitätsstraße 150, 44780 Bochum, Germany, ou_persistent22              
3Theory and Simulation of Complex Fluids, Microstructure Physics and Alloy Design, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society, ou_1863393              

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Free keywords: Capillary wave; Dynamic scaling; Dynamic scaling behavior; Equilibrium state; Flat interface; Fluctuating hydrodynamics; Fluid interface; Interfacial roughening; Kardar-Parisi-Zhang universality class; Lattice Boltzmann method; Non-equilibrium process; Non-ideal fluid; Two-dimension, Computational fluid dynamics; Damping; Excited states, Interface states, article; chemical model; chemical structure; chemistry; computer simulation; nonlinear system; solution and solubility; surface property, Computer Simulation; Models, Chemical; Models, Molecular; Nonlinear Dynamics; Solutions; Surface Properties
 Abstract: Interfacial roughening denotes the nonequilibrium process by which an initially flat interface reaches its equilibrium state, characterized by the presence of thermally excited capillary waves. Roughening of fluid interfaces has been first analyzed by Flekkoy and Rothman, where the dynamic scaling exponents in the weakly damped case in two dimensions were found to agree with the Kardar-Parisi-Zhang universality class. We extend this work by taking into account also the strong-damping regime and perform extensive fluctuating hydrodynamics simulations in two dimensions using the Lattice Boltzmann method. We show that the dynamic scaling behavior is different in the weakly and strongly damped case. © 2013 American Physical Society.

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Language(s): eng - English
 Dates: 2013-02-25
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevE.87.022407
BibTex Citekey: Gross2013
 Degree: -

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Title: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
  Other : Phys. Rev. E
Source Genre: Journal
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Publ. Info: Melville, NY : American Physical Society
Pages: - Volume / Issue: 87 (2) Sequence Number: 022407 Start / End Page: - Identifier: ISSN: 1539-3755
CoNE: /journals/resource/954925225012