CFD as an Engineering Tool for Design and Analysis

This paper presents a boundary element method for solving the free surface flow problem for a body moving at a constant speed beneath a free surface. The method is based on nonlinear ship wave calculation using the raised panel iterative Dawson approach. Simple Rankine type singularities are distributed over the body panels and over the free surface panels raised above the free surface. The boundary conditions are applied to the real surfaces, the hull boundary condition to the wetted surface of the hull and the linearized free surface conditions to the actual wave surface obtained in the previous iteration. The wave resistance of a submerged spheroid and the body of revolution, whose forms can be expressed by means of simple mathematical relation, is compared with the available experimental results found in literature. Values are found to be in a good agreement.