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Micro-PIV Investigation of a Sinusoidal Crossflow Microfiltration Module

[+] Author Affiliations
Michal M. Mielnik, Lars R. Sætran

Norwegian University of Science and Technology, Trondheim, Norway

Paper No. ICMM2003-1118, pp. 887-894; 8 pages
doi:10.1115/ICMM2003-1118
From:
  • ASME 2003 1st International Conference on Microchannels and Minichannels
  • 1st International Conference on Microchannels and Minichannels
  • Rochester, New York, USA, April 24–25, 2003
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-3667-3
  • Copyright © 2003 by ASME

abstract

A micro-PIV system is presented in detail, pointing out important aspects of micro-PIV system design cruicial for its operation. The micro-PIV system is then applied on a sinusoidal microchannel, and the fluid motion inside the device is presented and discussed. The wall shear stress at the waist of the channel is measured to be up to 60% higher than the wall shear stress in a conventional parallel-plate flow. The results suggest that altering of channel geometry may contribute to better design of cross-flow microfiltration units, in terms of reduced clogging by shear-control of bacterial motion. Furthermore, the flow is shown to exhibit a strong Reynolds number dependence, characterised by the onset of periodic distortion imposed on the flow by the sinusoidal walls occuring between Re = 2 and Re = 10.

Copyright © 2003 by ASME
Topics: Microfiltration

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