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Article citations


A. Homsy, S. Koster, J. C. T. Eijkel, A. Van den Berg, F. Lucklum, E. Verpoorte and N. F. de Rooij, “A High Current Density DC Magnetohydrodynamic (MHD) Micropump,” Lap on a Chip, Vol. 5, No. 4, 2005, pp. 466-471. doi:10.1039/b417892k

has been cited by the following article:

  • TITLE: On Laminar Flow in Microfabricated Channels with Partial Semi-Circular Profiles

    AUTHORS: William J. Federspiel, Isabella Valenti

    KEYWORDS: Hagen-Poiseuille Flow; Poiseuille Flow; Flow Resistance; Wall Shear Stress

    JOURNAL NAME: Open Journal of Applied Sciences, Vol.2 No.1, March 29, 2012

    ABSTRACT: Soft and hard micromachining techniques used to develop microfluidic devices can yield microchannels of many different cross-sectional profiles. For semi-circular microchannels, these techniques often produce only partialsemicircular (PSC) cross-sections. This study investigated fully developed laminar flow in PSC microchannels as a function of a circularity index, κ, defined as the ratio of the radiuses along the curved and flat surfaces of the PSC profile. A correction factor, K, to the Hagen-Poiseuille relation was determined and was well-fitted by the power-law relationship K=5.299/κ2.56. Actual correction factors were compared to estimates based on several hydraulic models for flow in microchannels of arbitrary cross-section, as well as the half-ellipsoid cross-section. The level of wall shear stress, when normalized by the pressure drop per unit length, increased approximately linearly with increase in the circularity index, κ.