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Implementation of the Radial Basis Function method in Dynamic Mesh Motion for CFD Applications and Numerical Analysis of Energy Extracting Flapping Foils in Shear Flows

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dc.contributor.author Θεοδωράκης, Κωνσταντίνος el
dc.contributor.author Theodorakis, Konstantinos en
dc.date.accessioned 2022-11-29T09:04:45Z
dc.date.available 2022-11-29T09:04:45Z
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/56284
dc.identifier.uri http://dx.doi.org/10.26240/heal.ntua.23982
dc.rights Αναφορά Δημιουργού-Μη Εμπορική Χρήση 3.0 Ελλάδα *
dc.rights.uri http://creativecommons.org/licenses/by-nc/3.0/gr/ *
dc.subject Energy Production en
dc.subject Free Surface en
dc.subject Von Karman Vortex Street en
dc.subject Mesh Deformation en
dc.subject Shear Flows en
dc.subject Coupled Solver en
dc.subject Fully Passive Flapping Foil en
dc.subject CFD en
dc.title Implementation of the Radial Basis Function method in Dynamic Mesh Motion for CFD Applications and Numerical Analysis of Energy Extracting Flapping Foils in Shear Flows en
heal.type bachelorThesis
heal.classification Computational Fluid Dynamics en
heal.language en
heal.access free
heal.recordProvider ntua el
heal.publicationDate 2021-11-02
heal.abstract In this work a fully passive energy harvesting foil is studied computationally. An in-house 2nd order finite volume CFD solver, MaPFlow, is strongly coupled with a rigid body dynamics solver to investigate the foil operation under uniform and sheared inflow conditions with/without free surface. The mesh follows the airfoil motion using a radial basis function (RBF) mesh deformation approach. Initially, MaPFlow predictions are compared to experimental and numerical results available in the literature, where reasonable agreement is found. Next, one-phase simulations are considered for linearly sheared inflow for various shear rates. Results suggested that foil performance can be enhanced under sheared inflow conditions. Finally, two-phase simulations taking into account the free surface, for both uniform and sheared inflow, are considered. Predictions indicate a significant deterioration in performance of the system when the foil operates under the free surface due to the interaction of the shed vorticity with the free surface. en
heal.advisorName Παπαδάκης, Γεώργιος el
heal.committeeMemberName Μπελιμπασσάκης, Κωνσταντίνος el
heal.committeeMemberName Παπαδάκης, Γεώργιος el
heal.committeeMemberName Τριανταφύλλου, Γεώργιος el
heal.academicPublisher Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ναυπηγών Μηχανολόγων Μηχανικών. Τομέας Ναυτικής και Θαλάσσιας Υδροδυναμικής el
heal.academicPublisherID ntua
heal.numberOfPages 109 σ. el
heal.fullTextAvailability false


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Αναφορά Δημιουργού-Μη Εμπορική Χρήση 3.0 Ελλάδα Except where otherwise noted, this item's license is described as Αναφορά Δημιουργού-Μη Εμπορική Χρήση 3.0 Ελλάδα