摘要
针对现有径向加热铝材退火炉所采用的径向对流换热方式造成铝卷退火效率低,铝卷表面与内部温差大的缺点,采用轴向对流换热的方式,设计出侧喷加热铝材退火炉。利用CFD软件FLUENT,采用标准K-ε模型,对径向加热与侧喷加热铝材退火炉内气体流动和传热问题进行了数值模拟研究,得到了炉内流场与温度场分布特征。结果表明,侧喷加热铝材退火炉内气体流动顺畅、对流换热均匀性好、炉温升速快,且温差控制在±1℃内,满足退火工艺对炉温均匀性的要求,为侧喷加热铝材退火炉的设计与研究提供了理论基础。
According to the drawback of inefficiency annealing and large temperature difference between aluminum coils＇s surface and interior in the present aluminum annealing furnace which used radial convection heat transfer, the side-blown aluminum annealing furnace was designed by adopting axial convection heat transfer. Numerical simulation of turbulent flow and heat transfer in radial heat and side-blown aluminum annealing furnace was done using CFD software-FLUENT and K-ε model, the flow field and temperature field in furnace were illustrated. The results indicate that the current in side-blown annealing furnace is fluent, the uniformity of convection heat transfer is good, the increase of furnace gas＇s temperature is fast, the temperature difference is about±1℃, and can satisfy the annealing technology＇s desire about the uniformity of furnace gas＇s temperature, which provides theoretical basis for side-blown aluminum annealing furnace＇s design and research.
出处
《热加工工艺》
CSCD
北大核心
2008年第22期80-84,87,共6页
Hot Working Technology
基金
国家“十一五”“九七三”计划资助项目(2007CB613706)
国家教育部留学回国人员基金资助项目(76084)
关键词
侧喷加热铝材退火炉
流场
对流换热
温度场
数值模拟
side-blown aluminum annealing furnace
flow field
convection heat transfer
temperature field
numerical simulation
