Low Order Representations in the Turbulent Wake of a Normal Flat Plate

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atmire.migration.oldid3944
dc.contributor.advisorMartinuzzi, Robert
dc.contributor.authorJochaud du Plessix, Phillip Alexandre
dc.contributor.committeememberMorton, Chris
dc.contributor.committeememberWare, Antony
dc.contributor.committeememberWood, David
dc.date.accessioned2015-12-22T18:14:54Z
dc.date.available2015-12-22T18:14:54Z
dc.date.issued2015-12-22
dc.date.submitted2015en
dc.description.abstractThe turbulent wake of a normal flat plate, characterized by quasi-periodic vortex-shedding dynamics, is investigated in the context of low-order modeling, non-linear dynamics and kinetic energy transfer. The flow is characterized, coherent-structures are educed through the implementation of three models, and the transfer of kinetic energy between the most energetic structures and to the unresolved scales of motion is investigated. A low-order kinematic model (LOM) is constructed via the truncation of a Galerkin expansion using the energetically-optimal proper orthogonal decomposition (POD). The harmonic and shift modes of the LOM are coupled via the mean-field paraboloid in phase space, enabling the construction of a generalized phase-average (GPA). The GPA is shown to capture key flow behaviour and physics that traditional phase-averaging (TPA) cannot, including variation in the base flow and modulation of the vortex-shedding amplitude. A clearer understanding of energy transfer is made possible through the simplified representations of the models.en_US
dc.identifier.citationJochaud du Plessix, P. A. (2015). Low Order Representations in the Turbulent Wake of a Normal Flat Plate (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/26798en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/26798
dc.identifier.urihttp://hdl.handle.net/11023/2693
dc.language.isoeng
dc.publisher.facultyGraduate Studies
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subjectEngineering--Aerospace
dc.subjectEngineering--Mechanical
dc.subject.classificationTurbulenceen_US
dc.subject.classificationBluff-Body Aerodynamicsen_US
dc.subject.classificationWakesen_US
dc.subject.classificationLow-order modellingen_US
dc.subject.classificationProper orthogonal decompositionen_US
dc.subject.classificationMean field theoryen_US
dc.titleLow Order Representations in the Turbulent Wake of a Normal Flat Plate
dc.typemaster thesis
thesis.degree.disciplineMechanical and Manufacturing Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
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