| Intermittent particle distribution in synthetic free-surface turbulent flows. | |
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MedLine Citation:
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PMID: 18643368 Owner: NLM Status: PubMed-not-MEDLINE |
Abstract/OtherAbstract:
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Tracer particles on the surface of a turbulent flow have a very intermittent distribution. This preferential concentration effect is studied in a two-dimensional synthetic compressible flow, both in the inertial (self-similar) and in the dissipative (smooth) range of scales, as a function of the compressibility C . The second moment of the concentration coarse grained over a scale r , n_{r};{2} , behaves as a power law in both the inertial and the dissipative ranges of scale, with two different exponents. The shapes of the probability distribution functions of the coarse-grained density n_{r} vary as a function of scale r and of compressibility C through the combination C/r;{kappa} (kappa approximately 0.5) , corresponding to the compressibility, coarse grained over a domain of scale r , averaged over Lagrangian trajectories. |
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Authors:
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Lauris Ducasse; Alain Pumir |
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Publication Detail:
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Type: Journal Article Date: 2008-06-10 |
Journal Detail:
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Title: Physical review. E, Statistical, nonlinear, and soft matter physics Volume: 77 ISSN: 1539-3755 ISO Abbreviation: Phys Rev E Stat Nonlin Soft Matter Phys Publication Date: 2008 Jun |
Date Detail:
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Created Date: 2008-07-22 Completed Date: 2008-08-22 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101136452 Medline TA: Phys Rev E Stat Nonlin Soft Matter Phys Country: United States |
Other Details:
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Languages: eng Pagination: 066304 Citation Subset: - |
Affiliation:
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Institut Non Linéaire de Nice, CNRS, F-06560 Valbonne, France. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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