0600135 - ÚMCH 2025 RIV CH eng J - Journal Article
Tadyszak, Krzysztof - Jäger, Alessandro - Pánek, Jiří - Hrubý, Martin
Design and optimization of microfluidic vortex diode.
Mathematical and Computational Applications. Roč. 29, č. 6 (2024), č. článku 97. ISSN 1300-686X. E-ISSN 2297-8747
R&D Projects: GA MŠMT(CZ) LM2023053; GA MŠMT(CZ) LUAUS24137; GA MŠMT(CZ) LUAUS24272; GA MŠMT(CZ) EH22_008/0004607
Grant - others:AV ČR(CZ) StrategieAV21/26
Program: StrategieAV
Institutional support: RVO:61389013
Keywords : fixed-geometry fluidic diode * fluidic check valve * unidirectional fluid flow
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 1.9, year: 2023
Method of publishing: Open access
Result website:
https://www.mdpi.com/2297-8747/29/6/97DOI: https://doi.org/10.3390/mca29060097

The performed research presents modeling results for designing microfluidic vortex diodes. These devices rectify fluid flow and can be used in many applications on micro and macro scales. The modeling, utilizing computational fluid dynamics (CFD) with the turbulence model RANS k-ε in COMSOL Multiphysics, has led to optimizing diodicity—the reversed-to-forward flow pressure drop ratio. The goal was to find the best flow-rectifying geometry within the 2D vortex-type design by changing the wall geometry, diode shape, and inflow velocities, identifying significant parameters and dependencies. Improving diodicity can be achieved by increasing the radius r1 of the central channel, increasing the entire diode radius r2, decreasing the width w of the rectangular channel, and reducing its length L. Additionally, changing the circular shape of the diode to an elliptical one can improve diodicity. The significance of this research is evident in the potential applications of these devices in microfluidic setups where fixed-geometry unidirectional flow is required, e.g., mixing, filtration, cell separation, and drug delivery, or on industrial scales, e.g., energy harvesting, wastewater treatment, and water sterilization.
Permanent Link: https://hdl.handle.net/11104/0357489