化工学报2009，Vol.60Issue(12)：2969-2974,6.
螺旋转子的结构参数对管内换热影响的数值研究
Numerical study on influence of structural parameters of spiral rotor internal insert on heat transfer
摘要
Abstract
Internal inserts can effectively enhance heat transfer, and also have good anti-scaling and scale removing performance. In the present numerical study, the effects of structural parameters of the spiral rotor internal insert on heat transfer and flow resistance were investigated. The numerical results confirmed that the heat transfer is enhanced by 30% and the friction resistance is increased by 600% ～ 700% as compared with those in plain tube respectively. The increase in the clearance between blade and tube wall, the increase in the helix pitch of rotor, and the decrease in the radius of rotating shaft can decrease the rotational speed and then decrease the heat transfer rate and friction factor. Appropriately increasing the helix pitch of rotor, reducing the clearance between blade and tube wall and reducing the radius of rotating shaft can lead to a better heat transfer performance.关键词
螺旋转子/强化换热/阻力特性/数值研究Key words
spiral rotor/ heat transfer enhancement/ friction factor/ numerical study分类
能源科技引用本文复制引用
邢程,孟继安,李志信..螺旋转子的结构参数对管内换热影响的数值研究[J].化工学报,2009,60(12):2969-2974,6.基金项目
国家重点基础研究发展计划项目(2007CB206901). （2007CB206901）
