Effect of fluid dynamics and device mechanism on biofluid behaviour in microchannel systems: modelling biofluids in a microchannel biochip separator
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Xue, Xiangdong, Patel, Mayur, Kersaudy-Kerhoas, Maïwenn, Bailey, Christopher, Desmulliez, Marc P.Y. and Topham, David (2009) Effect of fluid dynamics and device mechanism on biofluid behaviour in microchannel systems: modelling biofluids in a microchannel biochip separator. In: International Conference on Electronic Packaging Technology & High Density Packaging, 2009. ICEPT-HDP '09. Institute of Electrical and Electronics Engineers, Inc., Piscataway, NJ, USA, pp. 179-186. ISBN 978-1-4244-4659-9
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Abstract
Biofluid behaviour in microchannel systems is investigated in this paper through the modelling of a microfluidic biochip developed for the separation of blood plasma. Based on particular assumptions, the effects of some mechanical features of the microchannels on behaviour of the biofluid are explored. These include microchannel, constriction, bending channel, bifurcation as well as channel length ratio between the main and side channels. The key characteristics and effects of the microfluidic dynamics are discussed in terms of separation efficiency of the red blood cells with respect to the rest of the medium. The effects include the Fahraeus and Fahraeus-Lindqvist effects, the Zweifach-Fung bifurcation law, the cell-free layer phenomenon. The characteristics of the microfluid dynamics include the properties of the laminar flow as well as particle lateral or spinning trajectories. In this paper the fluid is modelled as a single-phase flow assuming either Newtonian
or Non-Newtonian behaviours to investigate the effect of the
viscosity on flow and separation efficiency. It is found that, for a flow rate controlled Newtonian flow system, viscosity and outlet pressure have little effect on velocity distribution. When the fluid is assumed to be Non-Newtonian more fluid is separated than observed in the Newtonian case, leading to reduction of the flow rate ratio between the main and side channels as well as the system pressure as a whole.
| Item Type: | Book Section |
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| Additional Information: | This paper forms part of the proceedings of the 2009 International Conference on Electronic Packaging Technology & High Density Packaging (ICEPT-HDP 2009), held 10-13 August 2009, in Beijing, China. ©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
| Uncontrolled Keywords: | biofluid behaviour, microchannel systems, modelling, microchannel biochip separator, blood plasma separation |
| Subjects: | R Medicine > R Medicine (General) Q Science > QA Mathematics |
| School / Department / Research Groups: | School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Mechanics & Reliability Group School of Computing & Mathematical Sciences > Department of Computer Systems Technology School of Computing & Mathematical Sciences > Department of Mathematical Sciences School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Fire Safety Engineering Group School of Computing & Mathematical Sciences > Centre for Numerical Modelling & Process Analysis > Computational Science & Engineering Group |
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| Last Modified: | 31 Mar 2011 18:20 |
| URI: | http://gala.gre.ac.uk/id/eprint/1511 |
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