Hydroelastic analysis on water entry of a constant-velocity wedge with stiffened panels

The numerical scheme of the present method is verified in 2D analysis by comparing with published literature results and the decoupled result of a commercial software. Numerical results show that the present method is more accurate than hydroelastic methods based on the Wagner model, and it can predict the oscillatory response after flow separation, which is usually infeasible in hydroelastic methods based on the Wagner model. By removing the coupled terms in the governing equations, the present method can be used for structural response analysis under the decoupled condition. Then, the numerical scheme is further validated by the comparison with the decoupled result of the commercial software. Through the comparison between coupled and decoupled results of a 3D wedge, it is found that the effect of fluid-structure interaction and the oscillatory response after flow separation are important for predicting the structural responses.