Coherent Dynamics and Energetics in Thin Flat Plate Wakes

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dc.contributor.advisorMartinuzzi, Robert
dc.contributor.advisorHu, Yaoping
dc.contributor.authorAgrey, Kaden
dc.contributor.committeememberJohansen, Craig
dc.contributor.committeememberWan, Richard
dc.contributor.committeememberPieper, Jeff
dc.date2021-11
dc.date.accessioned2021-08-20T21:29:24Z
dc.date.available2021-08-20T21:29:24Z
dc.date.issued2021-08
dc.description.abstractThe dynamics and energetics of two mean two-dimensional wakes behind a flow-normal thin flat plate, induced by inclusion and exclusion of end plates, are studied. Both wakes are characterized by quasi-periodic vortex shedding but differ in mean topology and typical wake characteristics, such as mean base pressure and recirculation length. Energetically optimal proper orthogonal decomposition modes are used to approximate the coherent motion and thus triply decompose the velocity field into a mean, coherent, and residual field. This is utilized to obtain a dynamic characterization of the wakes and to study the large scale coherent structures and their energetic exchanges with other scales of motion. From this, a slow-varying base flow and lateral shear layer flapping are shown to influence the shedding dynamics differently in each wake. These differences in the mean field and coherent dynamics are related to wake turbulence levels and vortex deformation, and thus are at the beginning of the energy cascade and the energy transfer process related to the wake turbulence levels.en_US
dc.identifier.citationAgrey, K. (2021). Coherent dynamics and energetics in thin flat plate wakes (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/39114
dc.identifier.urihttp://hdl.handle.net/1880/113754
dc.language.isoengen_US
dc.publisher.facultySchulich School of Engineeringen_US
dc.publisher.institutionUniversity of Calgaryen
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.en_US
dc.subjectFluid Dynamicsen_US
dc.subjectFluid Mechanicsen_US
dc.subjectTurbulenceen_US
dc.subjectBluff-body Wakesen_US
dc.subjectLow-order Modelingen_US
dc.subjectVortex Sheddingen_US
dc.subjectLow-frequency Wake Dynamicsen_US
dc.subject.classificationEngineering--Mechanicalen_US
dc.titleCoherent Dynamics and Energetics in Thin Flat Plate Wakesen_US
dc.typemaster thesisen_US
thesis.degree.disciplineEngineering – Mechanical & Manufacturingen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameMaster of Science (MSc)en_US
ucalgary.item.requestcopytrueen_US
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