Research on Hydrodynamic Performance of New Type Small Water Plane Area Wave-Piercing Catamaran in Regular Wave

This article investigates the resistance of a catamaran in regular waves using the Reynolds-averaged Navier–Stokes method. The study begins by assessing the numerical uncertainties and validating the numerical method through model tests. Subsequently, the resistance of the catamaran is analyzed under various conditions, including different drafts, hull spacings, wave orientations (incidence angles), wave heights, and wavelengths. The results reveal that increasing the catamaran’s speed and draft leads to higher resistance while decreasing the heave and trim angle. A larger spacing between the hulls reduces the total resistance coefficient, as it minimizes wave interference on the inner hull, thereby decreasing the trim angle. Although different wave orientations have a minimal effect on catamaran resistance, they primarily influence the trim angle and sinkage. Higher wave heights result in greater total resistance, comprising both frictional resistance and pressure resistance, while simultaneously helping to stabilize the attitude of the catamaran in waves. In addition, increasing the wavelength within a specific range amplifies motion, attitude changes, and overall resistance. This article’s calculation methods and findings offer valuable theoretical insights for studying and optimizing catamaran performance in wave conditions.