Ship resistance performance optimization design based on CAD / CFD

For the current limitations of ship parametric methods, using ship hull morphing method, this paper developed ship morphing parametric module, realized the integration of CAD/CFD software using iSIGHT and established integrated optimization platform. To verify the feasibility of ship morphing method, 1300TEU container ship bulbous bow´s optimization was made using genetic algorithm. The results showed that the ship morphing method based on CAD has the following advantages: (1) fully using the function of CAD software´s parametric modeling, optimization variables are less; (2) providing a precise hull shape for resistance analysis; (3) acquiring the information of displacement, longitudinal center of buoyancy and so on from CAD model; (4) directly reflecting the optimization results into three-dimensional ship model. These advantages made the method have practical significance.