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对液滴分别采用光滑粒子流体动力学(SPH)和任意拉格朗日-欧拉(ALE)两种方法模拟液滴高速冲击有机玻璃(PMMA)过程中液滴的变形、固体结构的损伤.结果表明:两种算法中结构表面的损伤情况与Brunton实验数据吻合,证明了数值分析方法的可行性和精确性;此外,对比发现SPH方法模拟液固撞击过程更具有优势.利用SPH方法分析实际工程问题,验证了两种工程处理技术可以有效地提高螺旋桨抗雨水的冲击能力.
The droplet deformation and solid structure damage were simulated by the two methods of smooth particle hydrodynamics (SPH) and arbitrary Lagrange - Euler (ALE) on the droplet. The results show that the damage of structural surface in the two algorithms is in good agreement with the Brunton experimental data, which proves the feasibility and accuracy of the numerical analysis method. In addition, SPH method is more advantageous to simulate the liquid-solid impact process. Engineering problems, validated the two engineering techniques can effectively improve the propeller anti-rain impact.