In this study, we investigate the relationship between key parameters of a microfluidic dispenser and the size of the generated droplets, from which ice grains of the desired size (300–600 µm) are formed for application in Ice Abrasive Water Jet (IAWJ) technology. The objective was to achieve stable droplet generation of suitable size with minimal scatter. A Festo microfluidic dispenser was employed. Using robust experimental design based on Taguchi’s method, the influence of multiple parameters on droplet formation and size was systematically analyzed, which consequently affects the size of the ice grains. The confirmation test showed an average grain size of 450 µm and a 63% share of suitable droplets, with scatter between repetitions ranging from 200 to 650 µm. The results confirm that the microfluidic approach enables efficient production of ice grains consistent with the requirements of IAWJ technology.
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