Lundi 25 novembre 2024 à 11h, salle des séminaires IRPHE
Résumé : Flow-induced vibration (FIV) of bluff bodies has traditionally represented a problem that leads to fatigue and structural damage. Much research has been devoted to mitigating its effects. More recently, however, FIV has been considered as a source of renewable energy harvesting.
In this seminar, we consider first the generic 2D geometry, the circular cylinder, and its FIV response. The questions of whether an afterbody is required for FIV and whether other geometries may display vibration amplitudes that are not self-limiting to one diameter, as in the case of the circular cylinder. In particular, thin ellipses are considered and found to have a Hyper Branch amplitude response which an order of magnitude higher in both amplitude and power generated compared to that of the circular cylinder.
Kerry Hourigan - Dpt. of Mechanical and Aerospace Engineering / Monash University Melbourne