Contribution to the CFD modeling of rotating wheels and
treaded tires in passenger cars

Σμυρλής, Γεώργιος; Smyrlis, Georgios

dc.contributor.author	Σμυρλής, Γεώργιος	el
dc.contributor.author	Smyrlis, Georgios	en
dc.date.accessioned	2022-09-27T10:20:38Z
dc.date.available	2022-09-27T10:20:38Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/55772
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.23470
dc.rights	Default License
dc.subject	CFD	en
dc.subject	Μέθοδος Ολισθαίνοντος Πλέγματος	el
dc.subject	Πλεγματοποίηση	el
dc.subject	Περιστρεφόμενοι Τροχοί	el
dc.subject	Επιβατικό Αυτοκίνητο	el
dc.subject	CFD	en
dc.subject	Sliding Mesh	en
dc.subject	Mesh Generation	en
dc.subject	Rotating Wheels	en
dc.subject	Passenger Car	en
dc.title	Contribution to the CFD modeling of rotating wheels and treaded tires in passenger cars	en
dc.title	Συμβολή στη CFD μοντελοποίηση περιστρεφόμενων τροχών και ανάγλυφων ελαστικών σε επιβατικά αυτοκίνητα	el
heal.type	bachelorThesis
heal.classification	Computational Fluid Dynamics	el
heal.language	el
heal.language	en
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2021-12-31
heal.abstract	This diploma thesis aims at the development of a new strategy for the mesh generation process for the Sliding Mesh technique, used in the CFD simulation of passenger cars, in order to correctly simulate the rotation of the wheels. The proposed workflow focuses on increasing the robustness of the mesh generation process, and reducing the simulation cost of the Sliding Mesh simulation method. In this kind of applications OpenFOAM© environment is used in order to simulate the flow around the car. A mesh generated by the new technique is assessed by comparing the results with the Tangential Velocity approach, which is the less demanding, yet less accurate method of simulating the rotation of the wheels. The accuracy of the Sliding Mesh and Tangential Velocity methods, when it comes to predicting the aerodynamic resistance of the car, is examined by comparing the simulation results to the Wind Tunnel data acquired for the same car setup. Finally, the gains in simulation cost from the new meshing process are discussed. Furthermore, limitations towards the reduction in the simulation cost of the Sliding Mesh method, are presented. This work also includes a preliminary investigation in the impact of the treads (the pattern responsible for the performance of tires in rainy conditions) in the aerodynamic performance of a car. For this purpose, a single wheel model is used for the CFD simulations in the OpenFOAM© environment. The method of including the treads in the generated mesh is developed, and the correct method for simulating the rotation of the treaded tire is presented. Finally, a treaded tire is compared to one without the tread pattern, through the results of the simulations conducted for both. The aerodynamic performance of each tire and the simulation cost of each approach are compared. Most of this work was conducted in the premises of Toyota Motor Europe (TME) in Zaventem, Belgium, during a six-month internship under the supervision of industrial manager Mr. Antoine Delacroix	en
heal.advisorName	Γιαννάκολγου, Κυριάκος	el
heal.committeeMemberName	Αρετάκης, Νικόλαος	el
heal.committeeMemberName	Μαθιουδάκης, Κωνσταντίνος	el
heal.committeeMemberName	Γιαννάκογλου, Κυριάκος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Μηχανολόγων Μηχανικών. Τομέας Ρευστών. Εργαστήριο Θερμικών Στροβιλομηχανών	el
heal.academicPublisherID	ntua
heal.numberOfPages	96 σ.	el
heal.fullTextAvailability	false