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Controlling the microscale separation of immiscible liquids using geometry: A computational fluid dynamics study

Kamrani, S ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1016/j.ces.2020.115625
  3. Publisher: Elsevier Ltd , 2020
  4. Abstract:
  5. In this study, we numerically determined the performance of a microscale separator comprising a lateral and a main channel to separate a two-phase flow. It was aimed to conduct continuous phase through the lateral channel and dispersed phase through the main channel. The continuous and dispersed phases were modeled as incompressible Newtonian fluids with the corresponding interface tracked by the phase-field model. The dynamics, including pressure fluctuations in the separator, were further examined. It was mechanistically demonstrated how the geometry of the separator modulates the phase separation. Further examined were the influences of various geometrical parameters on the performance of the separator. It was observed that the main- and lateral-channels geometry considerably modulates the performance. In addition, the response surface methodology (RSM) was used to model and optimize the performance. At optimum values for the geometrical parameters, the numerically determined performance was highly comparable to that predicted by the RSM. © 2020 Elsevier Ltd
  6. Keywords:
  7. Immiscible liquids ; Microfluidics ; Microscale separation ; Computational fluid dynamics ; Computational geometry ; Geometry ; Newtonian liquids ; Phase separation ; Separators ; Continuous phase ; Dispersed phase ; Dispersed phasis ; Immiscible liquids ; Incompressible Newtonian fluid ; Phase field models ; Pressure fluctuation ; Response surface methodology ; Two phase flow
  8. Source: Chemical Engineering Science ; Volume 220 , 2020
  9. URL: https://www.sciencedirect.com/science/article/pii/S0009250920301573