摘要
为解决工程应用中三维流固两相流动力学建模的难题,提出了基于离散单元法(DEM)的颗粒群轨道柔性模型.即在Euler坐标系中表达流体连续相,在Lagrangian坐标系中运用DEM表达颗粒离散相,从而简单且有效地解决了三维流固两相流中颗粒相和流体相间的双向耦合和求解问题.同时以三维管道中气固两相流的建模和典型实例,可视化地说明了该方法的有效性.
For dynamics modeling of 3D fluid-solids two-phase flows in engineering problem it was brought forward of particles trajectory flexible model based on the discrete element method (DEM). It meant that the fluid motion is solved in Euler model and the particle motion is calculated by DEM method in Lagrange coordinates. The model simply and effectively solves the two-way coupling effect and solution between particles and fluid. Applying this model, the calculation successfully solves a typical problem: simulating fluid-dynamics of gas-solid two-phase flows in a cylindrical tube.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2005年第5期790-794,共5页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金资助项目(50475019
50390060)
关键词
两相流
离散单元法
耦合
Computational fluid dynamics
Computer simulation
Navier Stokes equations
Numerical methods
Particles (particulate matter)
Three dimensional
Velocity
