化学链分级气化燃料反应器气固流动数值模拟  

NUMERICAL SIMULATION OF GAS-SOLID FLOW IN CHEMICAL LOOPING GRADED GASIFICATION FUEL REACTOR

作　　者：郭月 崔颖 宋涛 卢平[1] 殷上轶[1] GUO Yue;CUI Ying;SONG Tao;LU Ping;YIN Shangyi(School of Energy and Mechanical Engineering,Nanjing Normal University,Nanjing 210023,China;School of Energy and Environment,Southeast University,Nanjing 210096,China)

机构地区：[1]南京师范大学能源与机械工程学院,南京210023 [2]东南大学能源与环境学院,南京210096

出　　处：《力学与实践》2022年第4期820-826,共7页Mechanics in Engineering

基　　金：国家自然科学基金(51906113);江苏省自然科学基金(BK20190707)资助项目。

摘　　要：本文基于多相粒子单元法对化学链分级气化燃料反应器(下部为气化反应器,上部为重整反应器)开展了气固流动数值模拟研究,验证了曳力模型、模型参数(法向和切向颗粒–壁面碰撞恢复系数e和e)对计算结果的敏感性,并确定了合适的曳力模型及模型参数。探究了表观气速和两床接口处狭缝尺寸对颗粒连通量的影响规律,研究结果表明:颗粒连通量随表观气速的增加而增加,随狭缝尺寸的增加而减小。A numerical simulation of the gas-solid flow in a chemical looping gasification fuel reactor(the lower and upper part is designed as gasification and reforming reactor respectively)was carried out in this paper based on the multiphase particle-in-cell(MP-PIC)method.The sensitivity of the drag force model and the model parameters(normal-to-wall and tangent-to-wall momentum retention eand e)to the simulation results were verified,and appropriate models along with model parameters are determined.The effect of gas velocity and slit size at the interface between the two beds on the particle flux was investigated.The results show that the particle flux increases with gas velocity but decreases with slit size.

关 键 词：化学链分级气化 气固流动 多相粒子单元法 敏感性分析 

分 类 号：TK6[动力工程及工程热物理—生物能]