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Recurrent Bursts via Linear Processes in Turbulent Environments
KTH, Skolan för teknikvetenskap (SCI), Mekanik, Turbulens. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW. KTH, Centra, SeRC - Swedish e-Science Research Centre.ORCID-id: 0000-0002-9819-2906
KTH, Skolan för teknikvetenskap (SCI), Mekanik. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW. KTH, Centra, SeRC - Swedish e-Science Research Centre.ORCID-id: 0000-0001-9627-5903
KTH, Skolan för teknikvetenskap (SCI), Mekanik, Stabilitet, Transition, Kontroll. KTH, Skolan för teknikvetenskap (SCI), Centra, Linné Flow Center, FLOW. KTH, Centra, SeRC - Swedish e-Science Research Centre.ORCID-id: 0000-0001-7864-3071
Vise andre og tillknytning
2014 (engelsk)Inngår i: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 112, nr 14, s. 144502-Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Large-scale instabilities occurring in the presence of small-scale turbulent fluctuations are frequently observed in geophysical or astrophysical contexts but are difficult to reproduce in the laboratory. Using extensive numerical simulations, we report here on intense recurrent bursts of turbulence in plane Poiseuille flow rotating about a spanwise axis. A simple model based on the linear instability of the mean flow can predict the structure and time scale of the nearly periodic and self-sustained burst cycles. Poiseuille flow is suggested as a prototype for future studies of low-dimensional dynamics embedded in strongly turbulent environments.

sted, utgiver, år, opplag, sider
2014. Vol. 112, nr 14, s. 144502-
Emneord [en]
Episodic Accretion, Magnetic-Field, Star-Formation, Channel Flow, Dynamo, Simulations, Instability
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-148267DOI: 10.1103/PhysRevLett.112.144502ISI: 000338038900012Scopus ID: 2-s2.0-84898405410OAI: oai:DiVA.org:kth-148267DiVA, id: diva2:736093
Forskningsfinansiär
Swedish Research Council, 621-2010-4147 621-2013-5784Swedish e‐Science Research Center
Merknad

QC 20140805

Tilgjengelig fra: 2014-08-05 Laget: 2014-08-04 Sist oppdatert: 2017-12-05bibliografisk kontrollert

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Brethouwer, GeertSchlatter, PhilippHenningson, Dan S.Johansson, Arne V.

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