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Numerical Study of the Impact of Manifold and Microchannel Geometry on Flow Uniformity and Pressure Characteristics Within a Parallel Microchannel Array

[+] Author Affiliations
Mahshid Mohammadi, Kendra Sharp, Goran Jovanovic, Brian Paul

Oregon State University, Corvallis, OR

Paper No. ICNMM2012-73233, pp. 423-433; 11 pages
doi:10.1115/ICNMM2012-73233
From:
  • ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 Fluids Engineering Division Summer Meeting
  • ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels
  • Rio Grande, Puerto Rico, USA, July 8–12, 2012
  • Conference Sponsors: Heat Transfer Division, Fluids Engineering Division
  • ISBN: 978-0-7918-4479-3
  • Copyright © 2012 by ASME

abstract

Flow uniformity between individual channels within a microchannel array can be a significant factor affecting the performance of laminated-sheet chemical microreactors and micro-heat exchangers. Small dead volume and low residence time through the manifold are also typically favorable in these applications. In the specific application where mass transfer is desired between membrane-separated layers of microchannels, the use of shallow microchannels is important for achieving effective diffusion but negatively impacts the flow distribution among the channels. However, by implementing a thoughtful manifold design the manifold volume can be minimized while maintaining flow uniformity. In this study, numerical modeling is used to quantitatively investigate the impact of the geometry of the manifold and the structural parameters of the microchannels on desired uniformity and pressure drop within the low-Reynolds number system. The CFD tool COMSOL is used for the simulations.

Copyright © 2012 by ASME

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