EI、Scopus 收录

 引用本文: 詹杰民, 吴春亮. 多相流局部混合型质点网格法[J]. 力学学报, 2005, 37(3): 356-362.
A local mixing particle-in-cell method for fluid-particle multiphase flows[J]. Chinese Journal of Theoretical and Applied Mechanics, 2005, 37(3): 356-362.
 Citation: A local mixing particle-in-cell method for fluid-particle multiphase flows[J]. Chinese Journal of Theoretical and Applied Mechanics, 2005, 37(3): 356-362.

## A local mixing particle-in-cell method for fluid-particle multiphase flows

• 摘要: 提出模拟多相流的局部混合型质点网格法，该方法能稳定地模拟高浓度流体颗粒两相流. 在每一个颗粒团尺度的欧拉网格下(本文称之为欧拉微元)，基于Lagrangian追踪原理，可直接估计体积内颗粒的总量，从而准确求出欧拉微元和控制容积内颗粒的浓度(即颗粒在容积内的体积含量). 同时，假设在新的时间步下，颗粒在欧拉微元里充分混合，形成新颗粒团. 作者对竖直和倾斜容器中单粒径颗粒沉降和竖直容器中双粒径颗粒双峰悬浮液沉降过程进行了计算，结果与实测数据相符.

Abstract: In this paper, a local mixing particle-in-cell method isproposed for multiphase flows. The method can be used for dense particleflows. Under the grid of particle parcel scale, which is called as Eulercell in this paper, the total particle volume in the cell is calculateddirectly based on the Lagrangian method. Therefore the particle volumefraction (concentration) on the Euler cell and the fluid control volume canbe obtained accurately. Meanwhile, at new time step, particles on the Eulercell are assumed to be mixing sufficiently and come into being a new parcel.Comparing with the previous methods, the proposed method is more efficientand accurate. For the sedimentation in vertical and inclined vessels, andthe bimodal suspension in a vertical vessel, the numerical results agreewith the experimental results.

/

• 分享
• 用微信扫码二维码

分享至好友和朋友圈