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Large-Eddy Simulation of Longitudinal Stationary Vortices

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dc.contributorVirginia Techen
dc.contributor.authorSreedhar, M.en
dc.contributor.authorRagab, Saad A.en
dc.contributor.departmentBiomedical Engineering and Mechanicsen
dc.date.accessed2014-04-04en
dc.date.accessioned2014-04-24T18:34:15Zen
dc.date.available2014-04-24T18:34:15Zen
dc.date.issued1994-07-01en
dc.description.abstractThe response of longitudinal stationary vortices when subjected to random perturbations is investigated using temporal large-eddy simulation. Simulations are obtained for high Reynolds numbers and at a low subsonic Mach number. The subgrid-scale stress tensor is modeled using the dynamic eddy-viscosity model. The generation of large-scale structures due to centrifugal instability and their subsequent breakdown to turbulence is studied. The following events are observed. Initially, ring-shaped structures appear around the vortex core. These structures are counter-rotating vortices similar to the donut-shaped structures observed in a Taylor-Couette flow between rotating cylinders. These structures subsequently interact with the vortex core resulting in a rapid decay of the vortex. The turbulent kinetic energy increases rapidly until saturation, and then a period of slow decay prevails. During the period of maximum turbulent kinetic energy, the normalized mean circulation profile exhibits a logarithmic region, in agreement with the universal inner profile of Hoffman and Joubert [J. Fluid Mech. 16, 395 (1963)].en
dc.description.sponsorshipOffice of Naval Research N00014-92-J-4087en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationSreedhar, M.; Ragab, S., "large-eddy simulation of longitudinal stationary vortices," Phys. Fluids 6, 2501 (1994); http://dx.doi.org/10.1063/1.868436en
dc.identifier.doihttps://doi.org/10.1063/1.868436en
dc.identifier.issn1070-6631en
dc.identifier.urihttp://hdl.handle.net/10919/47635en
dc.identifier.urlhttp://scitation.aip.org/content/aip/journal/pof2/6/7/10.1063/1.868436en
dc.language.isoen_USen
dc.publisherAIP Publishingen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectTurbulent trailing vortexen
dc.subjectModelen
dc.subjectFlowen
dc.subjectComputationen
dc.subjectSwirlen
dc.titleLarge-Eddy Simulation of Longitudinal Stationary Vorticesen
dc.title.serialPhysics of Fluidsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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