THE OPTIMIZATION OF PASSIVE MICROMIXERS WITH THREE-SPLIT RHOMBIC SUB-CHANNELS FOR CHEMICAL ANALYSIS APPLICATION
DOI:
https://doi.org/10.11113/jurnalteknologi.v84.19351Keywords:
Micromixer, three-split rhombic, Reynolds number, Mixing Index, Navier-Stokes EquationAbstract
A rhombic with unbalanced three-split in a passive micromixer is studied. This work aims to optimize micromixers' three-split rhombic design for chemical analysis through mixing index and pressure drop analysis. The optimization was obtained by varying the angle of the rhombic and the ratio of the sub-channel widths, including angles of 30°, 45°, 60°, 90° and widths of 150:100 μm, 200:100 μm, 250:100 μm, and 300:100 μm. The COMSOL Multiphysics was used to simulate the performance based on a three-dimensional Navier-Stokes equation with the working fluid model in the form of water in the advection-diffusion model. A parametric study was carried out to evaluate the effect of the geometric micromixer variable on the mixing performance for the Reynolds range of 10-120. The results show that a micromixer with an unbalanced triangular rhombic the structure with an angle of 30° and width of 200:100 μm on Re 120 achieve mixing efficiency at 0.91 with pressure drop 1700 Pa.
Downloads
Published
Issue
Section
License
Copyright of articles that appear in Jurnal Teknologi belongs exclusively to Penerbit Universiti Teknologi Malaysia (Penerbit UTM Press). This copyright covers the rights to reproduce the article, including reprints, electronic reproductions, or any other reproductions of similar nature.