SPH求解器的开发及其在液舱晃荡数值模拟中的应用

Development of SPH Solver and Its Application in Numerical Simulation of Sloshing

本文提出一种改良的SPH固壁边界条件处理方法,并基于此开发适用于模拟液舱晃荡的数值求解器。采取该求解器对液舱晃荡现象进行数值模拟,结果与相关文献结果相当吻合,验证了其可靠性和准确性。在此基础上,通过计算分析横荡状态下不同隔板高度液舱晃荡时所产生的壁面压力和液体重心高度变化趋势,探讨了隔板高度对液舱晃荡的影响规律和物理机制,并为防荡隔板的设计提出合理建议。

A modified treatment for rigid boundary condition of SPH method is proposed in this paper, and a numerical solver that suitable for sloshing simulation is developed based on this SPH method. The phenomenon of liquid sloshing in a tank is simulated by using this solver, and the numerical simulation results are in good agreement with the results from the related literature, which verifies the reliability and accuracy of the model. On the basis of that, through the calculation and analysis of the wall pressure and the trend of liquid gravity center height, which generated by sloshing with different baffle lengths under the sway condition, this paper preliminarily discusses the effect and physical mechanism of baffle length on sloshing and proposes reasonable suggestions about the design of anti-sloshing baffle.