学术
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一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3MPa、最大固气比426kg／m^3）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．[著者文摘]
文章出处:
《动力工程》-2008年28卷1期 -95-99页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1000-6761（2008）01-0095-05
Numerical Simulation of the Dense Phase Conveying in Vertical Pipe
PU Wen-hao, ZHAO Chang-sui CHEN Xiao-ping , , XIONG Yuan-quan, LIANG Cai, LU Peng , FAN Chun-lei （MOE＇s Key Lab. of Clean Coal Power Southeast University, Generation and Combustion Technology, Nanjing 210096, China）
Abstract:
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.[著者文摘]
Key words:
engineering thermophysics;kinetic theory of granular; two fluid model; pneumatic conveying;dense phase
基金资助:
国家重点基础研究发展规划基金项目资助（2004CB217702）
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