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

Θεοδωράκης, Κωνσταντίνος; Theodorakis, Konstantinos

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