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目前鸟撞问题的数值分析方法主要以拉格朗日方法和欧拉方法为主。拉格朗日方法在计算时会遇到网格畸变和缠绕等问题,使计算无法进行。欧拉方法在确定模型的自由表面、变形边界和运动交界面时精确性较差。针对以上不足,本文创新性地应用一种无网格的SPH方法模拟鸟撞航空发动机进气风扇,旨在改善传统方法中网格畸形和精度不足的问题,并通过模拟数据和实验数据的对比,验证SPH方法对鸟撞问题分析的准确性。
At present, the method of numerical analysis of bird collisions is mainly based on Lagrange method and Euler method. Lagrange method in the calculation will encounter grid distortion and winding problems, the calculation can not be carried out. The Euler method is less accurate in determining the free surface, deformation boundary, and kinematic interface of the model. In view of the above insufficiency, this paper innovatively applies a meshless SPH method to simulate the air intake fan of bird aero engines, aiming to improve the problem of grid deformity and accuracy in the traditional method. By comparing the simulation data with the experimental data , Verifying the accuracy of the SPH method in analyzing bird collisions.