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Passive appendages generate drift through symmetry breaking

hal.structure.identifierDepartment of Mechanics [Stockholm]
dc.contributor.authorLACIS, U.
hal.structure.identifierDepartment of Mechanics [Stockholm]
dc.contributor.authorBROSSE, N
hal.structure.identifierDepartment of Mechanical and Aerospace Engineering [Princeton] [MAE]
dc.contributor.authorINGREMEAU, F.
hal.structure.identifierDepartment of Chemical, Civil and Environnemental Engineering [DICCA]
hal.structure.identifierINFN and CINFAI Consortium, Genova Section
dc.contributor.authorMAZZINO, A.
hal.structure.identifierDepartment of Mechanics [Stockholm]
dc.contributor.authorLUNDELL, F.
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorKELLAY, H.
hal.structure.identifierDepartment of Mechanics [Stockholm]
dc.contributor.authorBAGHERI, S.
dc.date.created2014-02-24
dc.date.issued2014-10-30
dc.identifier.issn2041-1723
dc.description.abstractEnPlants and animals use plumes, barbs, tails, feathers, hairs and fins to aid locomotion. Many of these appendages are not actively controlled, instead they have to interact passively with the surrounding fluid to generate motion. Here, we use theory, experiments and numerical simulations to show that an object with a protrusion in a separated flow drifts sideways by exploiting a symmetry-breaking instability similar to the instability of an inverted pendulum. Our model explains why the straight position of an appendage in a fluid flow is unstable and how it stabilizes either to the left or right of the incoming flow direction. It is plausible that organisms with appendages in a separated flow use this newly discovered mechanism for locomotion; examples include the drift of plumed seeds without wind and the passive reorientation of motile animals.
dc.language.isoen
dc.publisherNature Publishing Group
dc.rights.urihttp://creativecommons.org/licenses/by-nc/
dc.title.enPassive appendages generate drift through symmetry breaking
dc.typeArticle de revue
dc.identifier.doi10.1038/ncomms6310
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
bordeaux.journalNature Communications
bordeaux.page510 (1-9)
bordeaux.volume5
bordeaux.peerReviewedoui
hal.identifierhal-01091659
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01091659v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Nature%20Communications&rft.date=2014-10-30&rft.volume=5&rft.spage=510%20(1-9)&rft.epage=510%20(1-9)&rft.eissn=2041-1723&rft.issn=2041-1723&rft.au=LACIS,%20U.&BROSSE,%20N&INGREMEAU,%20F.&MAZZINO,%20A.&LUNDELL,%20F.&rft.genre=article


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