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COBEM 2019
25th International Congress of Mechanical Engineering
A STUDY ON THE KINEMATICS AND DYNAMICS OF FLAGELLUM MOTION IN CREEPING FLOWS.
Submission Author:
yves-garnard irilan , SC , Brazil
Co-Authors:
yves-garnard irilan
Presenter: yves-garnard irilan
doi://10.26678/ABCM.COBEM2019.COB2019-1906
Abstract
The low Reynold number flow around micro-organism (e.g bacteria, algae ) have been subject of recent researcher. Bacteria propel themselves in aqueous environment by rotating helically shaped flagella.Many theoretical and experimental works have been done to date, however propulsion by helical flagellum is a major challenge due to the complexity of tracking the movement of the head and body of the flagellum.In this work, we apply the Slender Body Theory (SBT) in order to describe the kinematics of swimming micro-organism with motion produced by helical flagellum propulsion. Numerical simulations are performed based on resistive force theories.In addition, we carried out some experiments with a macroscopic prototype micro-organisms in creeping flow motion. Silicon oil is used in order to ensure a low Reynolds number around the particle. We use a microscope system with video-camera in order to characterize the flagellum kinematics experimentally. The predictions form slender body theory are found to be in very good agreement with the experimental observation of our artificial flagellum.
Keywords
Low Reynolds Number Flow, Resistive Force Theory, Helical Flagellum
