Calculation of Potential flow for Three-Dimensional Boundary Layer Analysis along an Oscillating Ship

Abstract

In order to analyze the three-dimensional unsteady boundary layer development along an oscillating ship form at forward speed, the potential flow computation for the ship form is made in the present paper, neglecting the free surface effect. Hess and Smith's method is used by modifying the boundary condition and the symmetry condition. The unsteady potential velocity due to the ship pitch motion is computed as well as other modes of motion. The results show reasonable agreement with the author's experiments. The calculated hydrodynamic coefficients are of similar tendency to the results of existing calculations using three-dimensional wave-source method.