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Droplet breakup in an asymmetric microfluidic T junction

Bedram, A ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1140/epje/i2011-11078-7
  3. Publisher: 2011
  4. Abstract:
  5. Breakup of non-uniform droplets in an asymmetric T junction consisting of an inlet channel and two different-size outlet channels has been investigated numerically. Also, an analytical approach in the limit of the lubrication approximation has been extended to provide some analytical relations to study the system and verify the numerical results. Parameters that are important in the performance of the system have been determined and discussed. Our results indicate that smaller droplets can be produced by increasing the capillary number. As the geometry becomes symmetric the pressure drop decreases. Our results also reveal that the breakup time and the pressure drop for this system are smaller than the previous suggested method for producing non-uniform droplets, i.e., a uniform size T junction with different-length outlet channels
  6. Keywords:
  7. Analytical approach ; Analytical relations ; Capillary numbers ; Droplet breakup ; Inlet channels ; Lubrication approximations ; Numerical results ; T junctions ; Uniform size ; Pressure drop ; Drop breakup
  8. Source: European Physical Journal E ; Volume 34, Issue 8 , 2011 ; 12928941 (ISSN)
  9. URL: http://link.springer.com/article/10.1140%2Fepje%2Fi2011-11078-7