Hydrodynamic Fluctuations in Laminar Fluid Flow. II. Fluctuating Squire Equation
| dc.contributor.author | Ortiz De Zárate Leira, José María | |
| dc.contributor.author | Sengers, Jan V. | |
| dc.date.accessioned | 2023-06-19T14:59:04Z | |
| dc.date.available | 2023-06-19T14:59:04Z | |
| dc.date.issued | 2013-02 | |
| dc.description | © Springer Science+Business Media, LLC 2012. The authors acknowledge stimulating discussions with Andreas Acrivos, Bruno Eckhardt and Mihailo Jovanovic. The research was supported by the Spanish Ministry of Science and Innovation through research grant FIS2008-03801. | |
| dc.description.abstract | We use fluctuating hydrodynamics to evaluate the enhancement of thermally excited fluctuations in laminar fluid flow using plane Couette flow as a representative example. In a previous publication (J. Stat. Phys. 144:774, 2011) we derived the energy amplification arising from thermally excited wall-normal fluctuations by solving a fluctuating Orr-Sommerfeld equation. In the present paper we derive the energy amplification arising from wall-normal vorticity fluctuation by solving a fluctuating Squire equation. The thermally excited wall-normal vorticity fluctuations turn out to yield the dominant contribution to the energy amplification. In addition, we show that thermally excited streaks, even in the absence of any externally imposed perturbations, are present in laminar fluid flow. | |
| dc.description.department | Depto. de Estructura de la Materia, Física Térmica y Electrónica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | Ministerio de Ciencia e Innovación (MCINN), España | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/35317 | |
| dc.identifier.doi | 10.1007/s10955-012-0495-9 | |
| dc.identifier.issn | 0022-4715 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1007/s10955-012-0495-9 | |
| dc.identifier.relatedurl | http://link.springer.com/ | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/35038 | |
| dc.issue.number | 3 | |
| dc.journal.title | Journal of statistical physics | |
| dc.language.iso | eng | |
| dc.page.final | 558 | |
| dc.page.initial | 540 | |
| dc.publisher | Springer | |
| dc.relation.projectID | FIS2008-03801 | |
| dc.rights.accessRights | open access | |
| dc.subject.keyword | Energy amplification | |
| dc.subject.keyword | Fluctuating hydrodynamics | |
| dc.subject.keyword | Laminar fluid flow | |
| dc.subject.keyword | Orr-Sommerfeld equation | |
| dc.subject.keyword | Plane Couette flow | |
| dc.subject.keyword | Squire equation | |
| dc.subject.keyword | Vorticity fluctuations | |
| dc.subject.ucm | Física (Física) | |
| dc.subject.unesco | 22 Física | |
| dc.title | Hydrodynamic Fluctuations in Laminar Fluid Flow. II. Fluctuating Squire Equation | |
| dc.type | journal article | |
| dc.volume.number | 150 | |
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| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | d2b809b1-3ba2-407e-add2-8b8251e306ba | |
| relation.isAuthorOfPublication.latestForDiscovery | d2b809b1-3ba2-407e-add2-8b8251e306ba |
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