Analytical Prediction of Flow Field in Magnetohydrodynamic-Based Microfluidic Devices

Authors

Hussameddine S. Kabbani, University of Nevada, Las Vegas
Martin J. Mack, University of Nevada, Las VegasFollow
Sang W. Joo, University of Nevada, Las VegasFollow
Shizhi Qian, Old Dominion UniversityFollow

Document Type

Article

Publication Date

8-13-2008

Publication Title

Journal of Fluids Engineering

Volume

130

Issue

9

First page number:

0912041

Last page number:

0912046

Abstract

A new approximate solution for the velocity profile of steady incompressible magnetohydrodynamic (MHD) flows in a rectangular microchannel driven by the Lorentz force is proposed. Mean velocity and mass flow rate in a channel, subsequently derived, can be used efficiently for many MHD-based microfluidic applications, including the design of a MHD-based microfluidic network without resorting to costly full-scale computational fluid dynamics. The closed-form solutions, provided for both direct-current (dc) and alternating-current (ac) electric and magnetic fields, are in simple forms, without any series or functions to evaluate, and so can be readily used for inverse or control problems associated with MHD-based lab-on-a-chip (LOC) devices. Extensive comparisons with previous analytical, computational, and experimental results are performed, and summarized in the present study. The proposed solutions are shown to agree better with existing experimental and computational reports than previous approximations and are to be used in a broad range of MHD-based LOC applications with both dc and ac fields with required accuracy.

Keywords

Electric currents; Alternating; Electric currents; Direct; Lorentz force; Magnetic fields; Magnetohydrodynamics; Microfluidics; Speed

Disciplines

Aerodynamics and Fluid Mechanics | Applied Mathematics | Engineering | Fluid Dynamics | Mechanical Engineering | Nanoscience and Nanotechnology

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Repository Citation

Kabbani, H. S., Mack, M. J., Joo, S. W., Qian, S. (2008). Analytical Prediction of Flow Field in Magnetohydrodynamic-Based Microfluidic Devices. Journal of Fluids Engineering, 130(9), 0912041-0912046.