Two-Step Numerical Approach To Predict Ferrofluid Droplet Generation and Manipulation inside Multilaminar Flow ChambersClick to copy article linkArticle link copied!
- Jenifer Gómez-Pastora*Jenifer Gómez-Pastora*E-mail: [email protected]. Tel: +1 6142921284. Fax: +1 6142926404.Department of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. Los Castros s/n, 39005 Santander, SpainMore by Jenifer Gómez-Pastora
- Venoos Amiri RoodanVenoos Amiri RoodanDepartment of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, New York 14260, United StatesMore by Venoos Amiri Roodan
- Ioannis H. KarampelasIoannis H. KarampelasDepartment of Chemical and Biological Engineering, University at Buffalo (SUNY), Buffalo, New York 14260, United StatesFlow Science Inc., Santa Fe, New Mexico 87505, United StatesMore by Ioannis H. Karampelas
- Ali Q. AlorabiAli Q. AlorabiDepartment of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull HU6 7RX, UKMore by Ali Q. Alorabi
- Mark D. TarnMark D. TarnDepartment of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull HU6 7RX, UKMore by Mark D. Tarn
- Alexander IlesAlexander IlesDepartment of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull HU6 7RX, UKMore by Alexander Iles
- Eugenio BringasEugenio BringasDepartment of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. Los Castros s/n, 39005 Santander, SpainMore by Eugenio Bringas
- Vesselin N. PaunovVesselin N. PaunovDepartment of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull HU6 7RX, UKMore by Vesselin N. Paunov
- Nicole PammeNicole PammeDepartment of Chemistry and Biochemistry, University of Hull, Cottingham Road, Hull HU6 7RX, UKMore by Nicole Pamme
- Edward P. FurlaniEdward P. FurlaniDepartment of Chemical and Biological Engineering and Department of Electrical Engineering, University at Buffalo (SUNY), Buffalo, New York 14260, United StatesMore by Edward P. Furlani
- Inmaculada OrtizInmaculada OrtizDepartment of Chemical and Biomolecular Engineering, ETSIIT, University of Cantabria, Avda. Los Castros s/n, 39005 Santander, SpainMore by Inmaculada Ortiz
Abstract
In this study, a computational fluid dynamics approach is implemented to investigate the dynamic behavior of continuous-flow droplet microfluidics. The developed approach predicts both droplet generation and manipulation in a two-step process. First, droplet formation was studied in a flow-focusing junction through an Eulerian–Eulerian approach. Surface tension and wall adhesion were used in the model. The effect of flow rates and geometrical characteristics of the device on droplet size and dispensing rate was investigated. Second, post-generation, droplets were treated as point-like particles, and their deflection across a millimeter, multilaminar flow chamber with five parallel streams was modeled using an Eulerian–Lagrangian approach, thus improving computational efficiency. Flow rates and magnet location were optimized. Our simulated droplet trajectory inside the chamber was contrasted against experimental data, and a good agreement was found between them. This two-step computational model enables the rational optimization of continuous-flow droplet processing, and it can be readily adapted to a broad range of magnetically enabled microfluidic applications.
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