提升管内气固双流体模型的计算模拟  

Modeling of the Gas-Solid Turbulent Flow in a Riser Reactor

作　　者：郑雨[1] 万晓涛[1] 魏飞[1] 金涌[1] 

机构地区：[1]清华大学化工系

出　　处：《过程工程学报》2001年第3期249-256,共8页The Chinese Journal of Process Engineering

摘　　要：对提升管内气固流动行为建立了k-ε-k_p-ε_p-■ 双流体模型. 利用计算软件CFX模拟了内径0. 418 m、高18 m 的提升管内的冷态气固两相流动. 模拟结果与实验数据吻合较好.An advanced hydrodynamic model, k-ε-k_p-ε_p-■ two-fluid model based on the kinetic theory of granular flow, is established to simulate the gas-solid turbulent flow in a riser reactor. For both gas and solid phases, the turbulence is simulated by the k-ε model of low Reynolds number, and the kinetic theory of granular flow is adopted to model the collision of particles. This model is coded and solved by CFX software, a widely applied CFD tool, to simulate the cold gas-solid flow in a riser with 0.418 m ID and 18 m height. The predicted results show satisfactory agreement with experimental data, which indicates that the consideration of the turbulent motion and interaction between gas and solid is reasonable and bears significance in analyzing the turbulent gas-solid flow.

关 键 词：提升管 气固流动 双流体模型 计算模拟 

分 类 号：TQ051.1[化学工程]