2023 年 10 巻 1 号 p. 24-32
Sea cucumber Apostichopus japonicus is strongly affected physically by currents and waves. However, little is known about the flow resistance of this species. In this study, fluid forces acting on a model of sea cucumber were examined in a flume tank test. Parameters for estimating hydrodynamic forces using sea wave data were obtained in tank experiments. Compared to a spheroid body, the sea cucumber model exhibits a large value of drag coefficient, however, a relatively stable value of lift coefficient regardless of the angle of attack.