Abstract
In the present paper, a chain-shape mixer, which is composed of bifurcated passages and jet injections, is proposed and examined as a new passive-type micro-mixer. The mixing performance, flow characteristics and effects of the size of the jet outlet were evaluated using three-dimensional numerical simulation and μ-PIV measurements. Under small jet-size conditions, a poor mixing performance was obtained. However, by increasing the width of the jet outlet, a marked enhancement effect was achieved. This was due to the generation of multiple layers of the two fluids to be mixed, which was produced by the strong jet distorting the interfaces of the fluids. Furthermore, an optimum size of the jet was found in producing an effective mixing.
