Numerical Prediction of Wave-making Resistance of Pentamaran in Unbounded Water using a Surface Panel Method

This paper investigates the analysis of potential flow around the pentamaran hull moving with a uniform velocity in unbounded water using a surface panel method. The free surface boundary condition is linearized by the systematic method of perturbation in terms of a small parameter. The surfaces are discretized into flat quadrilateral elements and the influence coefficients are calculated by Morino's analytical formula. Dawson's upstream finite difference operator is used in order to satisfy the radiation condition. The pressure Kutta condition is imposed at the trailing edge of the lifting body to determine the dipole distribution, which generates required circulation on the lifting part. The effect of the hull stagger on the wave making resistance of the pentamaran hull is analyzed.