Abstract
This paper presents the continuous flow MHD(magnetohydrodynamic) micropump with side walled electrodes using Lorentz force, which is perpendicular to both magnetic and electric fields, for the application of microfluidic systems. A theoretically simplified MHD flow model includes the theory of fluid dynamics and electromagnetics and it is based upon the steady state, incompressible and fully developed laminar flow theory. A numerical analysis with the finite difference method is employed for solving the velocity profile of the working fluid across the microchannel under various operation currents and magnetic flux densities. In addition, the commercial CFD code called CFD-ACE has been utilized for simulating the MHD micropump. When the program was run(CFD-ACE), the applied current and magnetic flux density were set to be the variables that affected the performance of the MHD micropump. The MHD micropump was fabricated by using MEMS technology. The performance of the MHD micropump was obtained by measuring the flow rate as the applied DC current was changed from 0 to 1mA at 4900 and 3300 Gauss for the electrodes with the lengths of 5000, 7500 and 10000 µm, respectively. The experimental results were compared with the analytical and the numerical results. In addition, with the theoretical analysis and the preliminary experiments, we propose a final model for a simple and new MHD micropump, which could be applicable to microfluidic systems.
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References
M. Richter, J. Kruckow, J. Weidhaas, M. Wackerle, A. Drost, U. Schaber, M. Schwan and K. Kühl, Batch fabrication of silicon micropumps, in Proceedings of the Transducers’ 01/Eurosensors XV, Munich, Germany (2001) 936–939.
S. F. Bart, M. Mehregany, L. S. Tavrow and J. H. Lang, Microfabricated electrohydrodynamic pumps, Transducers’ 89, Book of Abstracts, Montreux, Switzerland (1989) 113.
A. Richter, H. Sandmaier, An electrohydrodynamic micropump, in Proceedings of the MEMS’ 90, Napa Valley, USA (1990) 99–104.
A. Richter, A. Plettner, K. A. Hoffmann, H. Sandmaier, Electrohydrodynamic pumping and flow measurement, in Proceedings of the MEMS’ 91, Nara Japan 30 (1991) 271–276.
R. M. Moroney, R. M. White and R. T. Howe, Ultrasonically induced microtransport, in Proceedings of the MEMS’ 91, Nara, Japan, 30 (1991) 277–282.
J. C. Rife, M. I. Bell, J. S. Horwitz, M. N. Kabler, R. C. Y. Auyeung and W. J. Kim, Miniature valveless ultrasonic pumps and mixers, Sensors Actuators 86 (2000) 135–140.
J. Jang and S. S. Lee, Theoretical and experimental study of MHD(magnetohydrodynamic) micropump, Sensors Actuators 80 (2000) 84–89.
S. Böhm, The comprehensive integration of microdialysis membranes and silicon censors, Ph.D. Thesis, University of Twente, The Netherlands (2000).
G. J. Kellogg, T. E. Arnold, B. L. Carvalho, D. C. Duffy and N. F. Sheppard Jr., in A van den Berg, et al. (Eds.), Micro Total Analysis Systems 2000, Kluwer Academic Publishers, Dordrecht (2000) 239–242.
Pfahler, J., Harley, J., Bau, H. H., Zemel, J., Liquid and gas transport in small channels. ASME DSC, 19 (1990) 149–157.
Leonardo Di G. Sigalotti, Jaime Klapp, Eloy Sira, Yasmin Meleán, Anwar Hasmy, SPH simulations of time-dependent Poiseuille flow at low Reynolds numbers, Journal of Computational Physics, 191(2) (2003) 622–638.
P. Filip and J. David, Axial Couette-Poiseuille flow of power-law viscoplastic fluids in concentric annuli, Journal of Petroleum Science and Engineering, 40(3–4) (2003) 111–119.
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This paper was recommended for publication in revised form by Associate Editor Seungbae Lee
Bumkyoo Choi received a B.S. degree in mechanical engineering, M.S. in mechanical design engineering from Seoul National University, Seoul, Korea in 1981 and 1983 respectively, and PhD in engineering mechanics from the University of Wisconsin, Madison in 1992. From 1992 to 1994, he was a technical staff member of CXrL (Center of X-ray Lithography) in the University of Wisconsin where he developed a computer code for thermal modeling of X-ray mask membrane during synchrotron radiation. He is currently a professor in the Dept. of Mechanical Engineering of Sogang Univ., Seoul, Korea. His research interest includes microelec-tromechanical system (MEMS), micromatching and microfabrication technologies, and modeling issues.
Sangsoo Lim received a B.S. degree in mechanical engineering from Sogang University, Seoul, Korea in 2005. He currently works at Hyundai Motors.
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Lim, S., Choi, B. A study on the MHD (magnetohydrodynamic) micropump with side-walled electrodes. J Mech Sci Technol 23, 739–749 (2009). https://doi.org/10.1007/s12206-008-1107-0
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DOI: https://doi.org/10.1007/s12206-008-1107-0