摘要
基于光滑粒子流体动力学(smoothed particle hydrodynamics,SPH)方法处理液体自由表面是一个挑战性问题,其主要原因是液体自由表面张力难以真实模拟以及气-液交界面的粒子不足造成的边界截断所引发的数值计算不稳定。文章在传统的处理表面张力的粒子间相互作用力(inter-particle interaction force,IIF)模型基础上,结合气体压力法,构造了一种新的液体表面张力处理算法。仿真实验结果表明,该文方法能够稳定和比较准确地模拟液体自由表面张力,模拟的液体自由表面更光滑、更真实。此外,该文还提出了一种新的核函数,提高了模拟效率。
The treatment of liquid free surface based on smoothed particle hydrodynamics（SPH） is a challenging problem. The main reasons are that it is difficult to simulate the liquid free surface tension and the boundary truncation due to particle deficiency at the gas liquid interface causes the numerical instability. In this paper, a new liquid surface tension processing algorithm is constructed based on the inter particle interaction force（IIF） model, the traditional method of dealing with surface tension, combining the gas pressure method. Simulation results show that this method can accurately and stab ly simulate the free surface tension of liquid, and the simulated liquid free surface is smoother and more realistic. In addition, a new kernel function is proposed to improve the simulation efficiency.
作者
殷竞存
朱晓临
郭清伟
汪欢欢
陈薇
YIN Jingcun;ZHU Xiaolin;GUO Qingwei;WANG Huanhuan;CHEN Wei(School of Mathematics,Hefei University of Technology,Hefei 230009,China)
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2018年第11期1574-1578,共5页
Journal of Hefei University of Technology：Natural Science
基金
国家自然科学基金资助项目(61272024)
