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Blast Shocks in Quasi-Two-Dimensional Supersonic Granular Flows

hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorBOUDET, Jean-François
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorCASSAGNE, J.
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorKELLAY, Hamid
dc.date.created2009-07-10
dc.date.issued2009
dc.identifier.issn0031-9007
dc.description.abstractEnIn a thin, dilute, and fast flowing granular layer, the impact of a small sphere generates a fast growing hole devoid of matter. The growth of this hole is studied in detail, and its dynamics is found to mimic that of blast shocks in gases. This dynamics can be decomposed into two stages: a fast initial stage (the blast) and a slower growth regime whose growth velocity is given by the speed of sound in the medium used. A simple model using ingredients already invoked for the case of blast shocks in gases but including the inelastic nature of collisions between grains accounts accurately for our results. The system studied here allows for a detailed study of the full dynamics of a blast as it relaxes from a strong to a weak shock and later to an acoustic disturbance.
dc.language.isoen
dc.publisherAmerican Physical Society
dc.title.enBlast Shocks in Quasi-Two-Dimensional Supersonic Granular Flows
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevLett.103.224501
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.subject.halPhysique [physics]/Physique [physics]/Dynamique des Fluides [physics.flu-dyn]
bordeaux.journalPhysical Review Letters
bordeaux.page224501
bordeaux.volume103
bordeaux.issue22
bordeaux.peerReviewedoui
hal.identifierhal-00668972
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00668972v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physical%20Review%20Letters&rft.date=2009&rft.volume=103&rft.issue=22&rft.spage=224501&rft.epage=224501&rft.eissn=0031-9007&rft.issn=0031-9007&rft.au=BOUDET,%20Jean-Fran%C3%A7ois&CASSAGNE,%20J.&KELLAY,%20Hamid&rft.genre=article


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