2019 Volume 2019 Pages 20190001
The purpose of this paper is to use a surface height function method and a Moving-Grid Finite Volume Method to perform a hydrodynamic analysis when a plurality of fish-shaped submerged objects moves with rotation. Two fish were rotated and the fish were arranged longitudinally and horizontally. As a result of the analysis, the free surface shape above the fish also changed. When the fish were placed longitudinally, the drag coefficient in the rear fish was larger and the lift coefficient was positive in the backward fish. When the fish were placed horizontally, the drag coefficient was larger in the outer fish and the lift coefficient was positive in the outer fish. It shows the possibility to recreate a swimming environment that is close to the actual one than cannot be calculated by the conventional method.
