摘要
为模拟稠密两相流动中颗粒间真实碰撞过程及降低计算量,提出了格子确定性颗粒轨道模型。模型用La-grangian轨道法求解颗粒运动,并通过空间格子划分减少碰撞判断的次数。利用该模型成功模拟了二维稠密气固两相流动中的颗粒聚集现象。结果表明,模型能在合理误差范围内极大降低计算量,例如计算量降低为原模型1/99时,相对误差为17%,为模拟大尺度和复杂工况稠密两相流动奠定了基础。
A latticedeterministic trajectory model was developed to simulate the real interparticle collisions in dense twophase flow that reduced the computational time. The particle motion was predicted using the Lagrangian trajectory model with lattices used to reduce the times for collision analysis. The numerical simulation of twodimensional dense gassolid flow was successfully used to visualize the cluster formation process. The results show that the proposed model greatly reduces the computational time with only a small error. For example, the computation time becomes 1/99 of the original with an error of only 17%.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2003年第2期246-249,共4页
Journal of Tsinghua University(Science and Technology)
基金
国家重点基础研究发展规划资助项目(62980532)
