Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2008.11a
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- Pages.1851-1856
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- 2008
A Computational Fluid Dynamics Analysis on an Electrohydrodynamics Induction Micropump
전기수력학적 유도 마이크로 펌프에 대한 전산유체역학 해석
- Published : 2008.11.05
Abstract
A numerical program based on computational fluid dynamics has been developed to simulate characteristics of an EHD induction micropump. The ambiguity of boundary conditions was removed by adopting an equation formulated for electric potential as the dependent variable. The calculations show that the dependency of frequency agrees well with the experiments and the previous analysis. The instability, caused by backflows, is getting stronger as the channel depth increases, which is consistent with experiments. The present study reveals that it is due to the limit in the penetration depth which the electric field can affect. Despite the disadvantage of large channel depth, there is a certain optimal depth for the maximum flow rate.