Magnetically actuated circular displacement micropump
The development process of a magnetically actuated displacement micropump is demonstrated. Two permanent magnets are driven by electromagnets in a circular housing. The magnetic plugs dynamically act as valve or as driving unit. A theoretical model is used to obtain the plug velocities in the system through the calculation of the force equilibria. Especially, the small gap between the channel wall and the plug has a large influence on the resulting pump performance. Final design parameters are obtained by computational fluid dynamics simulations, which predict occurring pressure loads and developing flow rates. Additive manufacturing can be used to build the device. All materials in the fabrication are biocompatible to allow water, liquid foods, and cell-containing fluids like blood to be pumped. A detailed experimental and theoretical comparison is given for two different pump layouts.
KeywordsSettling velocity Magnetic bead CFD Sphere in tube Magnetic field Additive manufacturing
Open access funding provided by Danube University Krems University for Continuing Education. The authors gratefully acknowledge the financial support of the NÖ Forschungs- und Bildungsges.m.b.H. (NFB) through the Life Science Calls (Project ID: LSC13-024). Throughout the developing process, several 3D printing technologies of cooperation partners were used. The authors thank Markus Frauenschuh at Landesberufsschule Hallein, the research group of Dieter Suess at the Vienna University of Technology, and Bernd Bickel and Thomas Auzinger at the Institute of Science and Technology Austria for their personal assistance and hardware support.
- 11.Francis AW (1933) Wall effect in falling ball method for viscosity. J Appl Phys 4(11):403–406Google Scholar
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