摘要
为了准确理解流化床内双组分黏性颗粒的流动行为,实现流场分布的准确预测,本文在Bell颗粒-颗粒曳力模型的基础上,考虑黏性颗粒附着力对颗粒碰撞过程的影响,推导了黏性颗粒-颗粒曳力模型。将该曳力模型与欧拉多相流模型耦合模拟了Geldat-A类颗粒和黏性颗粒流化过程,与实验数据对比发现模拟预测的携带率与实验测量的结果吻合较好,验证了黏性颗粒-颗粒曳力模型的有效性。
The understanding of the binary cohesive particles flow behaviors is a key factor for predicate the flow field of the gas solid flow.This work derived a cohesive particle-particle drag by considering the effect of cohesive energy loss on Bell particle-particle drag model.Incorporating the new derived drag model,a multiphase Eularian model was conducted to simulate the entrainment processes of fine particle with a Geldart-A particles flow.A comparison between simulated entrainment rate and experimental data showed a good agreement,thus the drag model was validated.
作者
魏利平
江国栋
滕海鹏
WEI Li-Ping;JIANG Guo-Dong;TENG Hai-Peng(School of Chemical Engineering,Northwest University,Xi'an 710069,China)
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2019年第1期114-117,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助项目(No.61606153)
陕西省自然科学基础研究计划资助项目(No.2016JQ5101)
西北大学科学研究基金资助项目(No.15NW15)
陕西省教育厅科研计划(No.14JK1729)
关键词
流化床
黏性颗粒
曳力模型
双组分
fluidized bed
cohesive particles
drag model
binary particles
