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Drag reduction in a channel with microstructure grooves using the lattice Boltzmann method

Daeian, M. A ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1088/1361-6463/aa59d5
  3. Publisher: Institute of Physics Publishing , 2017
  4. Abstract:
  5. Using the Shan-Chen lattice Boltzmann multi-phase model, we investigate the effect of adding microstructured grooves to the walls of a 2D parallel-plate channel on the pressure drop in the channel. The effects of the size of the grooves on the pressure drop in the channel were considered. It was observed that the pitch of the grooves has a considerable effect on the pressure drop in the channel, and even for some values of the pitch we observe an increase in the pressure drop. As the pitch decreases, a lower pressure drop is achieved. The results also show that as the ratio of the solid-liquid contact surface to the whole surface is decreased, the pressure drop decreases. It is also observed that the grooves should be deep enough to yield drag reduction, otherwise it would have a negative effect. © 2017 IOP Publishing Ltd
  6. Keywords:
  7. Microstructure grooves ; Computational fluid dynamics ; Drag ; Drag reduction ; Drops ; Microstructure ; Pressure drop ; Lattice Boltzmann ; Lattice Boltzmann method ; Lower pressures ; Multiphase model ; Parallel-plate channels ; Shan-Chen ; Solid-liquid ; Superhydrophobic ; Pressure effects
  8. Source: Journal of Physics D: Applied Physics ; Volume 50, Issue 10 , 2017 ; 00223727 (ISSN)
  9. URL: http://iopscience.iop.org/article/10.1088/1361-6463/aa59d5