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SUMMARY:Boundary integrals\, slender bodies and a deforming gel microswimm
 er - Lyndon Koens (University of Cambridge)
DTSTART:20180517T120000Z
DTEND:20180517T130000Z
UID:TALK105928@talks.cam.ac.uk
CONTACT:Anne Herrmann
DESCRIPTION:The motion of microswimmers critically depends on their shape 
 and deformation through its interactions with the surrounding fluid. Under
 standing this motion therefore requires suitable hydrodynamic models that 
 can be used to reveal the underlying physics of the motion. In this talk I
  will discuss two separate explorations related to this. First I will disc
 uss how to derive a slender-body theory directly from the boundary integra
 l representation of Stokes flow. This slender body theory can handle arbit
 rary surface velocities and forces and requires no discussion about singul
 arities and where to place them. Furthermore\, similarly to the modified b
 oundary integral representations\, modified slender-body theories also exi
 st under suitable conditions on the flow.  In the second half of my talk I
  will then discuss the physics of an experimentally realized deforming gel
  microswimmer. Specifically I will recap the structure of the experimental
  swimmer and its motion\, before developing simple models to explain its p
 hysics.
LOCATION:MR11\, Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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