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Micro fluidic system holds promise for many novel applications where rapid mixing is important and has lead to number of developments. Despite of major developments no systematic study has been carried out so far to understand the effect of flow mechanism and geometry on microfluidic mixing. This work focuses on mixing analysis of low Reynolds number (<;25) fluids in T-shape passive micro mixer...
A novel rotary magnetohydrodynamic (MHD) (RMHD) micropump is presented in this paper in order to both benefit exclusive advantages from the MHD micropumps and eliminate the current obstacles in their implementation. Lorentz force, which is the actuation mechanism in RMHD, is used to propel a mercury slug in a circular microchannel in order to suck the working fluid from the inlet and pump it to the...
Miniaturization is the trend in analytical chemistry and life sciences. In the past two decades, miniaturization of fluid handling and fluid analysis has been emerging in the interdisciplinary research field of microfluidics. Some of the microfluidic applications are drug delivery, lab-on-a-chip, pharmaceutical development, synthesis of amino acids etc. Most of these applications are used for biochemistry...
The present numerical investigation is concerned with the role of second-order slip and jump in the steady incompressible slip flow and heat transfer in an isothermally heated horizontal planar microchannel. The field equations subject to the second-order boundary conditions are numerically solved by using a marching implicit procedure. Results are presented for air from a reservoir in the standard...
This paper presents the design and numerical simulation of a T-shape microfluidic electroosmotic micromixer. It is equipped with six microelectrodes that are embedded in the side surfaces of the microchannel. The electrode array consists of two sets of three 20 ??m and 60 ??m microelectrodes arranged in the form of two opposing triangles. Numerical analysis of electric potential and frequency effects...
AC electroosmotic pumping of fluids in a microchannel with two thin coplanar electrodes, deposited on one dielectric wall and placed in an aqueous solution, is studied in this paper. Two different numerical formulations are compared. In the first one, the transport equations (mass, molar and momentum balances) for the ion concentration and Poisson equation for the electric field are solved simultaneously...
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