摘要
针对传统光滑粒子动力学方法(smoothed particle hydrodynamics,SPH)在边界区域以及粒子分布不均匀的区域精度和稳定度较差的问题,对传统SPH方法中的密度近似方程进行了修正,运用改进的SPH方法对自由表面流动问题进行了数值模拟.结果表明:改进的SPH方法完整地得到了水流与障碍物及壁面相互作用而产生的水花飞溅、融合等复杂的自由表面变化特征,模拟结果与VOF(Volume of Fluid)方法得到的结果基本一致.
It is known that the conventional smoothed particle hydrodynamics （SPH） method has been hindered with low accuracy and poor stability. The accuracy and stability of the conventional SPH method are also closely related to border area and the distribution of particles. In order to improve computational accuracy, modified schemes for approximating density were used. The modified SPH method was used to investigate free surface flows. It is clearly demonstrated that the modified SPH method can effectively describe the dynamics of flows and the variation of the free surface, such as the spray splatters and fusion of interaction with obstacles and wall. The obtained SPH results show good agreement with the numerical results which is obtained using the volume of fluid （VOF） model.
出处
《中北大学学报（自然科学版）》
CAS
北大核心
2013年第6期633-635,641,共4页
Journal of North University of China(Natural Science Edition)
基金
山西省教育厅科技开发项目(20120020)
