Macroscopic effects of the spectral structure in turbulent flows
| hal.structure.identifier | Department of Mechanical Science and Engineering [Urbana] | |
| dc.contributor.author | TRAN, Tuan | |
| hal.structure.identifier | Department of Geology | |
| dc.contributor.author | CHAKRABORTY, Pinaki | |
| hal.structure.identifier | Department of Physics | |
| dc.contributor.author | GUTTENBERG, Nicholas | |
| hal.structure.identifier | Department of Physics and Astronomy [Pittsburgh] | |
| dc.contributor.author | PRESCOTT, Alisia | |
| hal.structure.identifier | Centre de physique moléculaire optique et hertzienne [CPMOH] | |
| dc.contributor.author | KELLAY, Hamid | |
| hal.structure.identifier | Department of Physics and Astronomy [Pittsburgh] | |
| dc.contributor.author | GOLDBURG, Walter | |
| hal.structure.identifier | Department of Physics | |
| dc.contributor.author | GOLDENFELD, Nigel | |
| hal.structure.identifier | Department of Mechanical Science and Engineering [Urbana] | |
| dc.contributor.author | GIOIA, Gustavo | |
| dc.date.created | 2009-08-25 | |
| dc.date.issued | 2010 | |
| dc.identifier.issn | 1745-2473 | |
| dc.description.abstractEn | There is a missing link between the macroscopic properties of turbulent flows(1-4), such as the frictional drag(5) of a wall-bounded flow, and the turbulent spectrum(1,6,7). The turbulent spectrum is a power law of exponent alpha (the 'spectral exponent') that gives the characteristic velocity of a turbulent fluctuation (or 'eddy') of size s as a function of s (ref. 1). Here we seek the missing link by comparing the frictional drag in soap-film flows(8), where alpha = 3 (refs 9,10), and in pipe flows(5), where alpha = 5/3 (refs 11,12). For moderate values of the Reynolds number Re, we find experimentally that in soap-film flows the frictional drag scales as Re-1/2, whereas in pipe flows the frictional drag scales(13) as Re-1/4. Each of these scalings may be predicted from the attendant value of a by using a new theory(14-16), in which the frictional drag is explicitly linked to the turbulent spectrum. | |
| dc.language.iso | en | |
| dc.publisher | Nature Publishing Group | |
| dc.rights.uri | http://creativecommons.org/licenses/by-sa/ | |
| dc.title.en | Macroscopic effects of the spectral structure in turbulent flows | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1038/NPHYS1674 | |
| dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft] | |
| dc.subject.hal | Physique [physics]/Physique [physics]/Dynamique des Fluides [physics.flu-dyn] | |
| bordeaux.journal | Nature Physics | |
| bordeaux.page | 438-441 | |
| bordeaux.volume | 6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00672181 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00672181v1 | |
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