From Pacemaker to Vortex Ring: Modeling Jellyfish Propulsion and Turning Public Deposited

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Last Modified
  • March 19, 2019
Creator
  • Hoover, Alexander
    • Affiliation: College of Arts and Sciences, Department of Mathematics
Abstract
  • Jellyfish represent one of the earliest and simplest examples of swimming by a macroscopic organism. Through a process of elastic deformation and recoil, jellyfish propulsion is generated via the coordinated contraction of its elastic bell by its coronal swimming muscles and a complementary re-expansion that is passively driven by stored elastic energy. In this thesis, I begin by first examining the role of mechanical resonance in producing faster or more efficient locomotion. I then examine the mechanics of oblate jellyfish swimming by incorporating material models that are informed by the musculature present in jellyfish into a model of an elastic bell in three dimensions. I then examine the effects of scaling on oblate bell forward swimming by examining the work of the musculature and the cost of transport involved. Lastly, I then shift my focus onto how the underlying acephalic neuromuscular organization of their bell allows for complicated swimming behaviors, such as steering and maneuvering.
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  • In Copyright
Advisor
  • Hedrick, Tyson
  • Griffith, Boyce
  • Adalsteinsson, David
  • Miller, Laura
  • Kier, William
Degree
  • Doctor of Philosophy
Degree granting institution
  • University of North Carolina at Chapel Hill Graduate School
Graduation year
  • 2015
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  • Chapel Hill, NC
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