Fluid-mechanical interaction of flexible bacterial flagella by the immersed boundary method

Sookkyung Lim, Charles Peskin

Research output: Contribution to journalArticle

Abstract

Flagellar bundling is an important aspect of locomotion in bacteria such as Escherichia coli. To study the hydrodynamic behavior of helical flagella, we present a computational model that is based on the geometry of the bacterial flagellar filament at the micrometer scale. We consider two model flagella, each of which has a rotary motor at its base with the rotation rate of the motor set at 100 Hz. Bundling occurs when both flagella are left-handed helices turning counterclockwise (when viewed from the nonmotor end of the flagellum looking back toward the motor) or when both flagella are right-handed helices turning clockwise. Helical flagella of the other combinations of handedness and rotation direction do not bundle.

Original languageEnglish (US)
Article number036307
JournalPhysical Review E
Volume85
Issue number3
DOIs
StatePublished - Mar 19 2012

Fingerprint

Immersed Boundary Method
Helix
Fluid
helices
fluids
Interaction
Anticlockwise
Clockwise
handedness
Left handed
locomotion
Right handed
Locomotion
interactions
Filament
Escherichia
Bacteria
Computational Model
bacteria
Escherichia Coli

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Statistical and Nonlinear Physics
  • Statistics and Probability

Cite this

Fluid-mechanical interaction of flexible bacterial flagella by the immersed boundary method. / Lim, Sookkyung; Peskin, Charles.

In: Physical Review E, Vol. 85, No. 3, 036307, 19.03.2012.

Research output: Contribution to journalArticle

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