| Underwater bubble pinch-off: Transient stretching flow. | |
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MedLine Citation:
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PMID: 21929096 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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At the point of pinch-off of an underwater air bubble, the speed of water rushing in diverges. Previous studies that assumed radial flow throughout showed that the local axial shape is two smoothly connected, slender cones that transition very slowly (logarithmically) to a cylindrical segment. Our simulations show that even with initially radial flow, a transient vertical flow develops with comparable speeds. Bernoulli pressure draws water into the singularity region while incompressibility forces it away from the neck minimum, generating significant vertical flows that rapidly slenderize and symmetrize the collapse region. This transition is due to a different mechanism, occurring much faster than previously expected. Vertical flows dictate the neck shape evolution. |
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Authors:
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Daniel C Herbst; Wendy W Zhang |
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Publication Detail:
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Type: Journal Article Date: 2011-08-11 |
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 Aug |
Date Detail:
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Created Date: 2011-09-20 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: 026313 Citation Subset: IM |
Affiliation:
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Physics Department and the James Franck Institute, University of Chicago, Chicago, Illinois 60637, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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