The Boussinesq approximation in rapidly rotating flows

dc.contributor.authorLopez, Jose M.
dc.contributor.authorMarques, Francisco
dc.contributor.authorAvila, Marc
dc.date.accessioned2015-07-13
dc.date.available2015-07-13
dc.date.created2013
dc.date.issued2015-07-13
dc.description.abstractIn commonly used formulations of the Boussinesq approximation centrifugal buoyancy effects related to differential rotation, as well as strong vortices in the flow, are neglected. However, these may play an important role in rapidly rotating flows, such as in astrophysical and geophysical applications, and also in turbulent convection. Here we provide a straightforward approach resulting in a Boussinesq-type approximation that consistently accounts for centrifugal effects. Its application to the accretion-disc problem is discussed. We numerically compare the new approach to the typical one in fluid flows confined between two differentially heated and rotating cylinders. The results justify the need of using the proposed approximation in rapidly rotating flows.en
dc.format.extentS. 56-77
dc.identifier.citationJournal of Fluid Mechanics 737 (2013):S. 56-77. <http://dx.doi.org/10.1017/jfm.2013.558>
dc.identifier.opus-id6427
dc.identifier.urihttps://open.fau.de/handle/openfau/6427
dc.identifier.urnurn:nbn:de:bvb:29-opus4-64270
dc.language.isoen
dc.rights.urihttp://www.gesetze-im-internet.de/urhg/index.html
dc.subjectBuoyancy-driven instability
dc.subjectNavier–Stokes equations
dc.subjectTaylor–Couette flow
dc.subject.ddcDDC Classification::6 Technik, Medizin, angewandte Wissenschaften :: 62 Ingenieurwissenschaften :: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
dc.titleThe Boussinesq approximation in rapidly rotating flowsen
dc.typearticle
dcterms.publisherFriedrich-Alexander-Universität Erlangen-Nürnberg (FAU)
local.journal.titleJournal of Fluid Mechanics
local.journal.volume737
local.sendToDnbfree*
local.subject.fakultaetTechnische Fakultät
local.subject.gnd-
local.subject.sammlungUniversität Erlangen-Nürnberg / Allianzlizenzen: Alle Beiträge sind mit Zustimmung der Rechteinhaber aufgrund einer DFG-geförderten Allianzlizenz frei zugänglich. / Allianzlizenzen 2013
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