Numerical simulation of wave landing loads characteristics of twin-float seaplane

Abstract

The coupled Euler-Lagrangian method is used to simulate the load characteristics of a Twin-Float seaplane when it is landing in waves. The fluid domain is described by Euler, the structure is described by Lagrangian, and the coupling interaction between the Euler material and the Lagrangian element is simulated by the enhanced immersion boundary method. Firstly, a three-dimensional numerical wave tank is established, and the accuracy of numerical wave-making is verified by linear wave theory. Then, the numerical calculation of seaplane wave landing load at different wave heights with the same wave length is carried out, Lastly the numerical results compared with the model experiment of towing tank. The numerical simulation results are in good agreement with the model experiment results. The results show that there will be obvious bouncing phenomena when the seaplane landed in the wave, and the higher the wave height is, the greater the load will be generated when the wave length is the same.