摘要
根据沙漠砂在下降管蓄热器进行热能存储的工作原理,设计制作下降管蓄热器实验装置,对沙漠砂作为显热蓄热介质与空气对流实现热交换的流动性进行研究;应用ANSYS Fluent离散相模型,对粒径为0.18~0.25 mm的沙漠砂在下降管中与空气对流的流动状态进行数值仿真分析。结果表明,当空气流速为0.60~0.80 m/s时,沙漠砂在下降管主体部分达到受力平衡,气固两相流呈现均匀混合的稳定状态,砂粒匀速降落,分布均匀性最好。
According to the thermal energy storage working principle of desert sand in the downcomer regenerator,an experimental device of the downcomer regenerator was designed and manufactured.The flowability of desert sand as the sensible heat storage medium and the air convection to realize heat exchange was studied.Using ANSYS Fluent discrete phase model,the flow state of desert sand with particle size from 0.18 mm to 0.25 mm in the downcomer with air convection was numerically simulated.The results show that when the air velocity is from 0.60 m/s to 0.80 m/s,the desert sand reaches force equilibrium in the main part of downcomer.The gas-solid two-phase flow shows a stable state of uniform mixing.The sand falls at a uniform speed,and the distribution uniformity is the best.
作者
马承渝
吕硕
朱桂花
MA Chengyu;LYU Shuo;ZHU Guihua(School of Chemistry and Chemical Engineering,North Minzu University,Yinchuan 750021,Ningxia,China;School of Mechatronic and Electrical Engineering,North Minzu University,Yinchuan 750021,Ningxia,China;Key Laboratory of Chemical Engineering and Technology of State Ethnic Affairs Commission,North Minzu University,Yinchuan 750021,Ningxia,China)
出处
《济南大学学报（自然科学版）》
CAS
北大核心
2021年第2期155-164,176,共11页
Journal of University of Jinan(Science and Technology)
基金
国家自然科学基金项目(51666001)
北方民族大学“宁夏低品位资源高值化利用及环境化工一体化技术”创新团队项目(20170714)
北方民族大学研究生创新项目(YCX19118)。
关键词
多相流
数值分析
沙漠砂
下降管蓄热器
multiphase flow
numerical analysis
desert sand
downcomer regenerator
