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SUMMARY:MEchanics GAthering -MEGA- Seminar: Reconfiguring it out: how flex
 ible structures withstand high fluid forces
DTSTART:20221027T161500
DTEND:20221027T171500
DTSTAMP:20260510T202427Z
UID:9d5c6ddf50ef7d52a2d070ac7a60d1a8295e2ea44e4e47ab351141d2
CATEGORIES:Conferences - Seminars
DESCRIPTION:Mrudhula Baskaran\nAbstract:\nPlants and other flexible struct
 ures reduce the drag they experience when subject to high velocity flows.
  Plants streamline their bodies and reduce their projected area to the flo
 w\, in a process known as reconfiguration. The drag reduction results from
  changes in the topology of the vortex ring that forms behind the reconfig
 uring object. Here\, we study the evolution of the vortex ring and its eff
 ects on the transient drag force behind flexible disks. Radial incisions a
 re made to the disks to allow them to reconfigure symmetrically without bu
 ckling. We quantify the reduction in the projected area of the disks from 
 deformation measurements and analyse the vortical structures behind the di
 sks using time-resolved particle image velocimetry. We relate these quanti
 ties to the transient drag force measured with a high-resolution load cell
 . We also provide a prediction of the drag coefficient for disks with diff
 erent flexibilities based on the projected area and vortex topology. These
  findings enable us to better understand the behavior of reconfiguring pla
 nts and design structures that withstand high fluid loading.\n\nBiography:
 \nMrudhula obtained a degree in mechanical and aerospace engineering from 
 Princeton University in 2019. She started her PhD that year in Professor K
 aren Mulleners' Unsteady Flow Diagnostics Laboratory. Her research involve
 s experimental work on bio-inspired vortex-dominated flows. 
LOCATION:MED 2 2423 https://plan.epfl.ch/?room==MED%202%202423 https://epf
 l.zoom.us/j/65022317743?pwd=alFuM0NVUUdxWWpRT0ZxeDUxa0lmUT09
STATUS:CONFIRMED
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