垂直管密相输送的数值模拟  

Numerical Simulation of the Dense Phase Conveying in Vertical Pipe

作　　者：蒲文灏[1] 赵长遂[1] 熊源泉[1] 梁财[1] 陈晓平[1] 鹿鹏[1] 范春雷[1] 

机构地区：[1]东南大学洁净煤发电及燃烧技术教育部重点实验室,南京210096

出　　处：《动力工程》2008年第1期95-99,共5页Power Engineering

基　　金：国家重点基础研究发展规划基金项目资助(2004CB217702)

摘　　要：基于稠密气体分子运动论和颗粒动力学,应用稠密气固两相流动的欧拉-欧拉双流体数学模型,利用数值方法模拟模拟垂直管内上升流动的行为,得到了气相和颗粒相速度分布以及压力损失.将该模型运用到垂直管高压密相(输送压力3 MPa、最大固气比426 kg/m3)气力输送中,结果表明模型预测的压降梯度与实验测量结果相符合.The gas-phase and granular-phase velocity distribution and pressure loss were obtained through the numerical simulation of the upwards flow characteristics in the vertical pipe by using an Euler-Euler two fluid model of dense gas-solid two phase flow based on the kinetic theory of dense gases and kinetic theory of granular. The numerical simulation model was applied to the dense-phase pneumatic conveying system with high pressure （the conveying pressure is 3 MPa, maximum solid-gas ratio is 426 kg/m^3） in vertical pipe. The pressure drop gradient predicted by the model is consistent with the experimental results.

关 键 词：工程热物理 颗粒动力学 双流体模型 气力输送 密相 

分 类 号：TK121[动力工程及工程热物理—工程热物理]