Show simple item record

dc.contributor.authorRigas, G
dc.contributor.authorEsclapez, Lucas
dc.contributor.authorMagri, L
dc.date.accessioned2019-01-17T00:30:57Z
dc.date.available2019-01-17T00:30:57Z
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/288109
dc.description.abstractThe dynamics of a three-dimensional axisymmetric blu -body wake are examined at low Reynolds regimes where transitions take place through spatio-temporal symmetry breaking. A linear stability analysis is employed to identify the critical Reynolds num- ber associated with symmetry breaking, and the associated eigenmodes, known as global modes. The analysis shows that the axisymmetric stable base ow breaks the rotational symmetry through a pitchfork m = 1 bifurcation, in agreement with previously reported results for axisymmetric wakes. Above this threshold, the stable base ow is steady and three-dimensional with planar symmetry. A three-dimensional global stability analysis around the steady re ectionally symmetric base ow, assuming no homogeneous direc- tions, predicts accurately the Hopf bifurcation threshold, which leads to asymmetric vortex shedding. DNS simulations validate the stability results and characterize the ow topology during the early chaotic regime.
dc.titleSymmetry breaking in a 3D bluff-body wake
dc.typeConference Object
dc.identifier.doi10.17863/CAM.35424
dcterms.dateAccepted2015-12-31
rioxxterms.versionofrecord10.17863/CAM.35424
rioxxterms.versionAM
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.licenseref.startdate2015-12-31
dc.contributor.orcidMagri, Luca [0000-0002-0657-2611]
rioxxterms.typeConference Paper/Proceeding/Abstract
pubs.funder-project-idRoyal Academy of Engineering (RAEng)
pubs.conference-nameCenter for Turbulence Research Proceedings of the Summer Program
cam.orpheus.counter58
rioxxterms.freetoread.startdate2022-01-16


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record