基于SPH和FVM的穿浪双体船跌落仿真研究

Research on the simulation of wave-piercing catamaran drop based on SPH and FVM

研究穿浪双体船的穿浪首砰击问题的方法包括理论计算、数值预报、试验等,在数值预报中,通常将其简化为船舶跌落模型来计算。SPH和FVM分别是无网格和有网格计算流体中常用的方法。针对船舶跌落问题,采用SPH和FVM分别计算船舶跌落过程船舶的加速度和速度变化,并与试验值进行对比研究。根据数值计算图像及数据,研究2种计算方法在船舶跌落仿真中应用的可行性以及各自的特点。

The methods of the research on slamming of wave-piercing catamaran’s wave piercing bow include theory calculation, numerical forecast and experiment. The model of catamaran drop is applied in numerical forecast as a simplified model. SPH and FVM are common methods in meshless and mesh CFD. To analyze the catamaran drop, the change of acceleration and velocity during catamaran drop is calculated on SPH and FVM respectively. The experimental results are also taken into comparative analysis. Based on the calculation image and data, the application of two methods on the simulation of catamaran drop has been researched. The results indicate the feasibility and characteristics of SPH and FVM in the simulation.