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정송현(Songhyeon Chung),류준일(Junil Ryu),김형수(Hyoungsoo Kim) 대한기계학회 2023 대한기계학회 춘추학술대회 Vol.2023 No.11
We experimentally investigated burial motion mechanisms of a flat fish on a sand bed. Here, we assumed that the influence of the flexural rigidity could be the major parameter for the hiding. We developed a model that mimics the flapping motion of the flatfish when hiding in the sand. The surrounding flow was observed by using particle image velocimetry (PIV). The flapping model generated counterclockwise vortices, some of which aided particle transport and burial. The experimental results showed an inverse proportionality between flexural rigidity and physical elements of the flow. Lower flexural rigidity resulted in faster flow velocity and stronger vorticity.