Abstract
Mixing of fluids is a very important unit operation for Chemical, Biochemical, & Pharmaceutical processes among others, with a great deal of interest for industrial and research sectors. Micromixers a new implementation in micro scale of mixers are being studied. Active (electrokinetic, pressure disturbances, ultrasonic, magneto-hydrodynamic) and passive (jet breakup, vortex, microchannels ) methods appear in the literature. In particular research of micromixers with microchannels having different kind of elbows are conducted focusing hydrodynamic phenomena in microscale, like caotic advection. LTCC Microsystem Technology is suitable for the construction of micromixers because their inherent capacity of implementing 2D and 3D structures. The goal of the present work is to report our current study on LTCC micromixers based on microchannels having different kind of elbows for geometry optimization applying finite element Computational Fluid Dynamic numerical methods for process chemical intensification. The study will contemplate nine different 2D and 3D LTCC micromixer geometries compared with straight channel micromixer and prospect hydrodynamic parameters as: flow rate, pressure difference, friction factor and head loss coefficient. It is also presented a description of flowage as a function of diffusion-convection equation in order to obtain the mixing performance of designed devices.
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