LeHavreV1, PubMed, Corpus, bibRecord, 000097

Nodal analysis of nonlinear behavior of the instability at a fluid interface.

Identifieur interne : 000097 ( PubMed/Corpus ); précédent : 000096; suivant : 000098

Nodal analysis of nonlinear behavior of the instability at a fluid interface.

Auteurs : M-C Renoult ; C. Rosenblatt ; P. Carles

Source :

Physical review letters [ 1079-7114 ] ; 2015.

RBID : pubmed:25839277

Abstract

In interface instabilities, deformations first grow exponentially, then enter a nonlinear regime affecting amplitude and symmetry. Most extant studies have focused on amplitude alone. Here, we study a 2D Rayleigh-Taylor instability for an initial sinusoidal deformation, analyzing its amplitude and asymmetry over time. For the latter, we define a metric based on the zero crossings of the interface. We develop a weakly nonlinear model and compare it to experimental data. It shows that our asymmetry metric complements the amplitude for an improved description of the instabilities' nonlinear phases.

DOI: 10.1103/PhysRevLett.114.114503
PubMed: 25839277

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pubmed:25839277

Le document en format XML

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<author><name sortKey="Rosenblatt, C" sort="Rosenblatt, C" uniqKey="Rosenblatt C" first="C" last="Rosenblatt">C. Rosenblatt</name>
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<author><name sortKey="Carles, P" sort="Carles, P" uniqKey="Carles P" first="P" last="Carles">P. Carles</name>
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<author><name sortKey="Rosenblatt, C" sort="Rosenblatt, C" uniqKey="Rosenblatt C" first="C" last="Rosenblatt">C. Rosenblatt</name>
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<front><div type="abstract" xml:lang="en">In interface instabilities, deformations first grow exponentially, then enter a nonlinear regime affecting amplitude and symmetry. Most extant studies have focused on amplitude alone. Here, we study a 2D Rayleigh-Taylor instability for an initial sinusoidal deformation, analyzing its amplitude and asymmetry over time. For the latter, we define a metric based on the zero crossings of the interface. We develop a weakly nonlinear model and compare it to experimental data. It shows that our asymmetry metric complements the amplitude for an improved description of the instabilities' nonlinear phases.</div>
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<Abstract><AbstractText>In interface instabilities, deformations first grow exponentially, then enter a nonlinear regime affecting amplitude and symmetry. Most extant studies have focused on amplitude alone. Here, we study a 2D Rayleigh-Taylor instability for an initial sinusoidal deformation, analyzing its amplitude and asymmetry over time. For the latter, we define a metric based on the zero crossings of the interface. We develop a weakly nonlinear model and compare it to experimental data. It shows that our asymmetry metric complements the amplitude for an improved description of the instabilities' nonlinear phases.</AbstractText>
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<AffiliationInfo><Affiliation>Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106-7079 USA.</Affiliation>
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Nodal analysis of nonlinear behavior of the instability at a fluid interface.

Nodal analysis of nonlinear behavior of the instability at a fluid interface.

Source :

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki