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SUMMARY:MechE Colloquium: Unraveling Fluid–Structure Interactions in Cro
 ssflow Pendular Systems
DTSTART:20251014T120000
DTEND:20251014T130000
DTSTAMP:20260526T115314Z
UID:feaaed08a60a659dbf867b39266e389c3bb8f834255a69007265964d
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Mickaël Bourgoin\, CNRS\, ENS\, University of Lyon  \nAb
 stract: Fluid–structure interactions in pendular systems are prevalent 
 in both natural and engineered settings\, giving rise to complex dynamics 
 and a variety of instabilities. In this talk\, we explore the flow–struc
 ture interactions of simple pendulum systems with one degree of freedom in
  the crossflow direction. We begin by investigating a disk pendulum\, demo
 nstrating how variations in the disk’s yaw angle induce intricate bi-sta
 ble dynamics\, which are effectively captured using a simple stochastic mo
 delling approach. Next\, we examine a pendulum with a “T-shaped” geome
 try\, where the unique configuration triggers a galloping instability\, le
 ading to large-amplitude oscillations. We analyze these flow–structure i
 nteractions and demonstrate that the system’s behavior can be accurately
  modeled as a van der Pol oscillator. Finally\, we showcase the integratio
 n of additive manufacturing with miniature pressure sensors\, enabling dir
 ect aerodynamic force measurements on slender “T-shaped” geometries as
  thin as 3 mm. These technique facilitate the development of cost-effecti
 ve multi-hole pressure probes\, broadening the potential for future experi
 mental investigations. \nCo-workers : Di Bao & Nicolas Plihon\n\nBiograph
 y: Mickaël Bourgoin is CNRS Research Director at the Physics Laboratory 
 of ENS de Lyon\, France\, specializing in the transport of fields and part
 icles in complex\, particularly turbulent\, flows. His research employs in
 novative Lagrangian modeling and experimental techniques to investigate si
 ngle and multiphase turbulence\, mixing\, particle dispersion\, and fluid
 –structure interactions\, addressing challenges at the intersection of f
 undamental fluid mechanics and applications in industry\, the environment\
 , and health.\nDr. Bourgoin lectures advanced fluid dynamics at Ecole Norm
 ale Supérieure de Lyon and Ecole Centrale de Lille\, and oversees the Mas
 ter 2 program in Physics at ENS de Lyon. He founded the international wint
 er school New Challenges in Turbulence Research (NCTR) in 2008\, organized
  biennially in Les Houches\, and chaired the 14th European Turbulence Conf
 erence in Lyon (2013). He currently serves on the board of the European Fl
 uid Dynamics Conference Committee and leads the French National Research N
 etwork Navier-Stokes 2.00. Dr. Bourgoin has published over 100 articles i
 n international journals and delivered more than 50 invited lectures\, inc
 luding keynotes at the 13th European Turbulence Conference (Warsaw\, 2011)
 \, the 9th International Conference on Multiphase Flow (Florence\, 2016) a
 nd the 72nd APS Division of Fluid Dynamics Meeting (Seattle). His contribu
 tions have been recognized with the 2009 Euromech Prize for Young Scientis
 ts and the 2022 ONERA Prize of the French Academy of Sciences.
LOCATION:CM 1 4 https://plan.epfl.ch/?room==CM%201%204 https://epfl.zoom.u
 s/j/61360740951
STATUS:CONFIRMED
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