A three-dimensional level set method for droplet sorting using a non-uniform electric field
Journal article
Naz, N. and Sui, Y. 2023. A three-dimensional level set method for droplet sorting using a non-uniform electric field. Physics of Fluids. 35 (8). https://doi.org/10.1063/5.0160683
| Authors | Naz, N. and Sui, Y. |
|---|---|
| Abstract | In this research, we have developed a computational method for droplet sorting using a non-uniform electric field. The method is based on a three-dimensional level-set method and the leaky-dielectric electrohydrodynamics (EHD) model. Level-set method is used for modeling the interface of the two-phase flow system. The electrostatic phenomenon is dealt with the leaky dielectric-leaky dielectric fluid system. At first, we validated our developed model for a classical flow case: a droplet subjected to a uniform electric field. The results obtained from the present computational method show good agreement with the existing results from the literature. After validation, we implemented the developed code in a practical application of droplet sorting using a non-uniform electric field (known as dielectrophoresis) in a rectangular microchannel with an orthogonal side channel. We mainly focus on the sorting of the droplet without and with the electric field effect as a function of different parameters of the problem. Depending on the intensity of the physical parameters, the droplet can flow into either the downstream main channel or it can sort into the orthogonal side branch. The sorting of a droplet is characterized by the critical branch ratio, qc above which the droplet enters the side branch. The results and conclusions from the present thesis facilitate the understanding of the fundamental principles and mechanisms of electrohydrodynamics (EHD)-based droplet sorting using dielectrophoresis in microfluidic channels. Therefore, present results can have potential usefulness toward the design and development of droplet-based microfluidic devices. |
| Keywords | Condensed Matter Physics; Fluid Flow and Transfer Processes; Mechanics of Materials; Computational Mechanics; Mechanical Engineering |
| Year | 2023 |
| Journal | Physics of Fluids |
| Journal citation | 35 (8) |
| Publisher | AIP Publishing |
| ISSN | 1070-6631 |
| 1089-7666 | |
| Digital Object Identifier (DOI) | https://doi.org/10.1063/5.0160683 |
| Official URL | https://pubs.aip.org/aip/pof/article-abstract/35/8/082103/2905643/A-three-dimensional-level-set-method-for-droplet?redirectedFrom=fulltext |
| Publication dates | |
| Online | 04 Aug 2023 |
| 01 Aug 2023 | |
| Publication process dates | |
| Accepted | 20 Jul 2023 |
| Deposited | 27 Jul 2023 |
| Accepted author manuscript | License File Access Level Open |
| Output status | Published |
| Additional information | Publications router: Date 2023-08-04 of type 'publication_date' with format 'electronic' included in notification |
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https://repository.canterbury.ac.uk/item/951wz/a-three-dimensional-level-set-method-for-droplet-sorting-using-a-non-uniform-electric-field
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