折流板换热器壳程流场数值模拟与结构优化  

Numerical Simulation and Structural Optimization of Flowing Field in Shell Side of Heat Exchanger with baffle

作　　者：刘敏珊[1] 董其伍[1] 刘乾[1] 

机构地区：[1]郑州大学热能工程研究中心,郑州450002

出　　处：《化工设备与管道》2006年第2期24-27,31,共5页Process Equipment & Piping

摘　　要：基于多孔介质与分布阻力的概念,采用FLUENT软件对单弓形折流板换热器的壳侧流场进行了三维数值模拟,模拟结果与实验结果吻合较好。在此基础上针对折流板换热器壳程压降大、能耗高、存在传热死区等的缺点提出了壳程流场的改进方案,通过数值模拟可以看到壳程流场改进后不仅具有压降低、场协同性能好、基本无传热死区等特点,而且在一定程度还提高了管束抗流体诱导振动的性能。Based on the concept of multi porous and distributed resistance, the software FLUENT was used to numerically simulate the 3-D flowing field at shell side in heat exchanger with single arch baffles. The result of the simulation was consistent with that of experiment well. Based on the simulation, the improvement to the flowing field was proposed with respect to the facts of large pressure drop, high enersy consumption and existence of dead space of heat transfer. After the improvement, by using numerical simulation, it is observed that the flowing field not only has the characteristics of low pressure drop, excellent synergy and without dead space of heat transfer, but also in crease the ability of tube bundle to resist the vibration induced by flowing medium.

关 键 词：单弓形折流板换热器 数值模拟 壳程强化传热 节能 

分 类 号：TK172[动力工程及工程热物理—热能工程]