Strength Analysis of Vessel Based on the Fluid Structure Interaction Method

Building a whole vessel model,and make use of FLUENT to calculate the resistance and surface pressure of the vessel in a certain speed. Compile a user-defined function, in which the numerical wave channel has been developed, thus the surface pressure was calculated in two kinds of special conditions, hogging and sagging, and then by using of the Fluid-solid coupling method, the surface pressure was exported to ANSYS.The method uses a same hull model in the flow field and the structure calculation process, avoiding the loss and distortion of information in the previous model transformation, and the calculated results can analyze more accurately the stress and deformation of the hull. The results for performance assessment of the vessel are effective and the calculation method can be a reference in the structure optimization design of vessels.