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Fluidic oscillation characteristics of plastic flow meter with the variation of cross-sectional shape of splitters  

Lee, Sung-Hee (Department of Shape Manufacturing R&D, Korea Institute of Industrial Technology)
Publication Information
Design & Manufacturing / v.15, no.2, 2021 , pp. 56-62 More about this Journal
Abstract
In this study, design technology of a non-mechanical flow meter using fluidic oscillation generated during the fluid flow in the chamber was investigated. To with respect to design a splitter, which is the most important factor in fluid oscillation, a transient flow simulation analysis was performed for three types of shapes and changes in inlet flow velocity. The oscillation characteristics with respect to the time in each case were compared, and it was confirmed that the SM03 model was the best among the presented models. In addition, the FFT analysis of the fluid oscillation results for the SM03 model was used to obtain a linear correlation between the flow velocity change and the maximum frequency, and a frequency of 20.957 (Hz/m/s) per unit flow velocity was obtained. Finally, injection molding simulation and molding experiment of the chamber with the designed splitter were performed.
Keywords
Non-mechanical flow meter; Fluidic oscillation; Splitter; Oscillation chamber; Flow simulation; FFT analysis; Injection molding simulation;
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