MEchanics GAthering –MEGA- Seminar: Flow-Induced Motions, from Energy Harvesting to Smart Shape-Shifting

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Event details

Date 17.04.2025
Hour 16:1517:00
Speaker Agathe Schmider, LadHyXÉcole Polytechnique
Location Online
Category Conferences - Seminars
Event Language English
Abstract: Flow-structure interactions play a crucial role in engineering, enabling both energy harvesting and passive flow control. Cylindrical structures can exhibit vortex-induced vibrations (VIV), where periodic vortex shedding drives oscillations. While VIV can threaten structural stability, it also offers potential for energy extraction. To explore this, we developed an oscillating cylinder system with tunable mechanical properties to study energy harvesting efficiency. In contrast, kirigami-based structures leverage smart shape-shifting to passively adapt to the flow. Inspired by paper cutting, these sheets deform into steady-state shapes dictated by their cutting patterns, functioning as poro-elastic membranes. Their fluid-structure coupling enables flow control by modifying wake dynamics.
These two examples of fluid-structure interactions provide insights into harnessing flow-induced motions for engineering applications.

Bio: Agathe Schmider has worked for several years as an engineer in the aerospace and renewable energy sectors before turning to research. She is currently a postdoctoral researcher with Sophie Ramananarivo and Pascal Hémon at LadHyX (École Polytechnique, Palaiseau, France), following the completion of her PhD in fluid mechanics in 2023 at Université de Poitiers (France). Her research focuses on fluid-structure interactions at moderate Reynolds numbers and their applications in engineering.

Practical information

  • General public
  • Free

Organizer

  • MEGA.Seminar Organizing Committee

Tags

fluid-structure interactions vortex-induced vibrations kirigami

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