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Fluid–structure interaction of three-dimensional magnetic artificial cilia

Published online by Cambridge University Press:  08 August 2012

S. N. Khaderi  and
P. R. Onck
S. N. Khaderi
Affiliation:
Zernike Institute for Advanced Materials, University of Groningen, 9747 AG Groningen, The Netherlands
P. R. Onck*
Affiliation:
Zernike Institute for Advanced Materials, University of Groningen, 9747 AG Groningen, The Netherlands
*
†Email address for correspondence: [email protected]
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Abstract

A numerical model is developed to analyse the interaction of artificial cilia with the surrounding fluid in a three-dimensional setting in the limit of vanishing fluid inertia forces. The cilia are modelled using finite shell elements and the fluid is modelled using a boundary element approach. The coupling between both models is performed by imposing no-slip boundary conditions on the surface of the cilia. The performance of the model is verified using various reference problems available in the literature. The model is used to simulate the fluid flow due to magnetically actuated artificial cilia. The results show that narrow and closely spaced cilia create the largest flow, that metachronal waves along the width of the cilia create a significant flow in the direction of the cilia width and that the recovery stroke in the case of the out-of-plane actuation of the cilia strongly depends on the cilia width.

JFM classification

Low-Reynolds-number flows: Low-Reynolds-number flows Micro-/Nano-fluid dynamics: Microfluidics Biological Fluid Dynamics: Propulsion
Type
Papers
Information
Journal of Fluid Mechanics , Volume 708 , 10 October 2012 , pp. 303 - 328
Copyright
Copyright © Cambridge University Press 2012

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