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SUMMARY:In silico microswimmers propelled by helical flagella: Modeling\, 
 Simulations &amp\; Analysis - Sookkyung Lim (University of Cincinnati)
DTSTART:20191216T130000Z
DTEND:20191216T140000Z
UID:TALK136027@talks.cam.ac.uk
CONTACT:Anne Herrmann
DESCRIPTION:Swimming bacteria with helical flagella are self-propelled mic
 ro-swimmers in nature\, and the swimming strategies of such bacteria vary 
 depending on the number and the position of flagella embedded in the cell 
 body. In this talk\, I will introduce two types of microorganisms\, multi-
 flagellated E. coli and single-flagellated Vibrio A.\, and focus on how ba
 cteria can swim and reorient their swimming course for survival. To model 
 the fluid-cell interaction\, the model organism consists of a rigid sphero
 idal cell body and a flexible single or multiple helical flagella attached
  to the cell body. The Kirchhoff rod theory is used to describe the elasti
 c helical flagella and the cell body is represented by a hollow ellipsoid 
 that can translate and rotate as a neutrally buoyant body interacting with
  a surrounding fluid. The hydrodynamic interaction between the fluid and t
 he cell is described by the regularized version of Stokes flow. Mathematic
 al approaches developed in this work can help to understand the swimming m
 echanism of flagellated bacteria.
LOCATION:MR11\, Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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