Abstract
Washing with water jets has been used effectively in various areas in recent years. In this study, a coaxial fan-shaped jet combined with a high-pressure jet is being investigated to improve the washing effect using a fan-shaped jet nozzle. The combination of nozzles and jetting pressure have been studied as washing conditions, and effective jetting conditions are now being shown. In this report, we evaluate the washing effect of a relatively small object coated with a starch-derived thin film on a flat plate, focusing on the feed rate as a washing condition. As a result, we found that increasing the number of washes is more effective than slowing down the feed rate (lengthening the washing time per cycle) for the same washing time (jet impingement duration).
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