Simulations of microflows induced by rotation of spirals in microchannels

Mustafa Koz; Serhat Yesilyurt

doi:10.1117/12.762331

13 February 2008 Simulations of microflows induced by rotation of spirals in microchannels

Mustafa Koz, Serhat Yesilyurt

Proceedings Volume 6886, Microfluidics, BioMEMS, and Medical Microsystems VI; 68860N (2008) https://doi.org/10.1117/12.762331
Event: MOEMS-MEMS 2008 Micro and Nanofabrication, 2008, San Jose, California, United States

Abstract

In microflows where Reynolds number is much smaller than unity, screwing motion of spirals is an effective mechanism of actuation as proven by microorganisms which propel themselves with the rotation of their helical tails. The main focus of this study is to analyze the flow enabled by means of a rotating spiral inside a rectangular channel, and to identify effects of parameters that control the flow, namely, the frequency and amplitude of rotations and the axial span between the helical rounds, which is the wavelength. The time-dependent three-dimensional flow is modeled by Stokes equation subject to continuity in a time-dependent deforming domain due to the rotation of the spiral. Parametric results are compared with asymptotic results presented in literature to describe the flagellar motion of microorganisms.

Citation Download Citation

Mustafa Koz and Serhat Yesilyurt "Simulations of microflows induced by rotation of spirals in microchannels", Proc. SPIE 6886, Microfluidics, BioMEMS, and Medical Microsystems VI, 68860N (13 February 2008); https://doi.org/10.1117/12.762331

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