结构入水冲击过程三维数值模拟及实验验证

Three-dimensional numerical and experimental investigation of the water entry process of cylinder structure

采用光滑粒子流体动力学(SPH)方法对圆柱结构入水冲击过程进行三维数值模拟并通过自行设计实验装置及高速摄影系统,对圆柱结构的入水过程进行实验研究。通过数值计算结果与实验结果的对比分析,验证所建立数值模型的有效性。在此基础上,通过改变结构入水速度、入水角度设置大量工况,分析研究不同参数对圆柱结构入水冲击过程的影响规律。

The water entry process of cylinder structure is numerically simulated by the threedimensional SPH method. Besides,experimental investigation is operated on the process using the designed device and the high-speed camera. The numerical simulation result and the experiment result are compared,verifying the efficiency of the numerical model built in the paper. Based on it,the entering velocity and angle are changed to set a series of work conditions. Then the influence of different parameters on the water entry process of cylinder structure are analyzed and concluded.