Abstract
The vortex method is analysis method which discretely represents vorticity of the flow field as a large number of micro-vortex particles. This method has good stability in the numerical integration and does not need the computational grid in the flow field. Using this method, the velocity field is obtained from the calculated vorticity field using the Biot-Savart formula and potential of upwelling. The pressure field has been calculated by using the unsteady Bernoulli equation. The purpose of this study is to analyze the flow around the shark and calculate the forces acting on the shark in three-dimension. Our results indicate that driving force has a large influence of the vortex.
