| Opening of a wall-mounted leaflet by a single flow pulse. | |
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MedLine Citation:
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PMID: 21867346 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The opening of a leaflet by one flow pulsation is studied here in an ideal system made of a rigid door, initially vertical, mounted on a horizontal wall. The dependence of the fluid-structure interaction on the leaflet inertia and flow parameters has been analyzed. The system has been solved by numerical integration of the Navier-Stokes equations coupled with the body dynamics. The behavior of the movable leaflet and resulting vortex formation has been conditioned through the range of Strouhal numbers and body inertia. When inertia is relatively large, the flow pulsation is unable to significantly move the leaflet. When inertia is relatively low, the degree of opening smoothly increases with lowering the Strouhal number (that corresponds, for example, to either a longer pulsation period or a higher flow velocity). The analysis also demonstrated the existence of a critical intermediate range where the body opens completely and impacts onto the lower wall at high speed. |
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Authors:
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Marija Vukicevic; Gianni Pedrizzetti |
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Publication Detail:
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Type: Journal Article Date: 2011-07-21 |
Journal Detail:
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Title: Physical review. E, Statistical, nonlinear, and soft matter physics Volume: 84 ISSN: 1550-2376 ISO Abbreviation: Phys Rev E Stat Nonlin Soft Matter Phys Publication Date: 2011 Jul |
Date Detail:
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Created Date: 2011-08-26 Completed Date: - 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: 017301 Citation Subset: IM |
Affiliation:
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D.I.C.Ar. University of Trieste, 34127 Trieste, Italy. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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