A review of the numerical strategies for solving ship hydroelasticity based on CFD-FEM technology

The hydroelasticity of ships is a complex fluid-solid interaction topic. The CFD-FEM technology has become a trend for studying ship hydroelasticity. Different numerical strategies, including mesh-based methods (mainly FVM-FEM) and meshless methods (mainly SPH-FEM, MPS-FEM) for hydroelastic solutions, are summarized and discussed. The two main categories include monolithic and partitioned schemes, and the latter can be further divided into one-way and two-way coupling methods. The computation cost of the one-way coupling method is lower than that of the two-way coupling method for small structural deformations. However, for large structural deformations, the two-way coupling model has significant advantages. Additionally, conservatism and efficiency of data interaction are core issues for all solution strategies. Therefore, the research and application of different data interpolation methods are summarized. Finally, the key factors of CFD and FEM technology to solve hydroelasticity and some prospects for its future development are proposed.