Experimental investigation of slip velocity and settling distribution of micro-particles in converging–diverging microchannel

Shirinzadeh, F ; Sharif University of Technology | 2017

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  1. Type of Document: Article
  2. DOI: 10.1007/s00542-016-3139-1
  3. Publisher: Springer Verlag , 2017
  4. Abstract:
  5. An experimental test bed based on single particle tracking techniques is employed in order to investigate the velocity domain, slip velocity, and settling distribution of micro-particles in low-Reynolds number poiseuille flow in converging–diverging microchannel. Three-dimensional velocity domain of particles are studied in the presence of walls and compared with the particle-free fluid. The results show that the velocity of particles moving near the side walls of microchannel decreases about 30 % compared to those moving at the centerline. Furthermore, the effects of converging–diverging geometry on sedimentation of micro-particles are considered. The results show an average decrease of about 40 % in sedimentation of particles among the total particles in converging–diverging channels which is one of the main advantages of these channels in comparison with the straight types. © 2016, Springer-Verlag Berlin Heidelberg
  6. Keywords:
  7. Domain walls ; Microchannels ; Reynolds number ; Diverging microchannels ; Experimental investigations ; Experimental testbed ; Low Reynolds number ; Sedimentation of particles ; Single particle tracking ; Three-dimensional velocity ; Velocity of particles ; Velocity
  8. Source: Microsystem Technologies ; Volume 23, Issue 8 , 2017 , Pages 3361-3370 ; 09467076 (ISSN)
  9. URL: https://link.springer.com/article/10.1007%2Fs00542-016-3139-1