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    National Tsing Hua University Institutional Repository > 工學院  > 動力機械工程學系 > 期刊論文 >  Simulation of two-dimensional fully developed laminar flow for a magneto-hydrodynamic (MHD) pump


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/49694


    Title: Simulation of two-dimensional fully developed laminar flow for a magneto-hydrodynamic (MHD) pump
    Authors: Wang, Pei-Jen;Chang, Chia-Yuan;Chang, Ming-Lang
    教師: 王培仁
    Date: 2004
    Publisher: Elsevier
    Relation: Biosensors and Bioelectronics, Elsevier, Volume 20, Issue 1, 30 July 2004, Pages 115-121
    Keywords: Biosensors
    Magnetohydrodynamics
    Fluidics
    Flow measurement
    Flow of fluids
    Hydrostatic pressure
    Finite element method
    Mathematical models
    Computer simulation
    Abstract: MHD micro-pumps circumvent the wear and fatigue caused by high pressure-drop across the check valves of mechanical micro-pumps in micro-fluidic systems. Early analyses of the fluid flow for MHD micro-pumps were mostly made possible by the Poiseuille flow theory; however, this conventional laminar approach cannot illustrate the effects of various channel sizes and shapes. This paper, therefore, presents a simplified MHD flow model based upon steady state, incompressible and fully developed laminar flow theory to investigate the characteristics of a MHD pump. Inside the pump, flowing along the channel is the electrically conducting fluid flowing driven by the Lorentz forces in the direction perpendicular to both dc magnetic field and applied electric currents. The Lorentz forces were converted into a hydrostatic pressure gradient in the momentum equations of the MHD channel flow model. The numerical simulations conducted with the explicit finite difference method show that the channel dimensions and the induced Lorentz forces have significant influences on the flow velocity profile. Furthermore, the simulation results agree well with the experimental results published by other researchers. © 2004 Elsevier B.V. All rights reserved.
    URI: http://www.elsevier.com/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/49694
    Appears in Collections:[動力機械工程學系] 期刊論文

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