内插螺旋弹簧换热管核心流强化传热特性研究  

Study on Heat Transfer Enhancement Characteristics of Inner Spiral Spring Core Flow

作　　者：刘丽芳[1] 程俊文 徐建民[1] 

机构地区：[1]武汉工程大学机电工程学院,湖北武汉430205

出　　处：《石油化工设备》2018年第1期8-13,共6页Petro-Chemical Equipment

摘　　要：采用FLUENT模拟计算及实验这两种方法,对内插不同圈径螺旋弹簧换热管在核心流区域的传热特性进行了研究,综合分析了内插螺旋弹簧圈径大小对管内速度场、温度场及对核心流强化传热效果的影响。结果显示,在管内核心流区域插入不同圈径螺旋弹簧具有显著的强化传热作用,增加幅度为5%~20%;管内核心流区域插入螺旋弹簧的强化传热效果与插入弹簧的圈径大小以及流体状态有关,存在一个内插螺旋弹簧的最优值。The heat transfer characteristics of the spiral spring with different coil diameter in the core flow region were studied by using FLUENT software and experimental method.The velocity field,temperature field and heat transfer of core flow were analyzed comprehensively.The results show that the spiral spring has a significant heat transfer enhanced effect in the core flow region of the tube,and the increase range is 5% ~ 20%.The enhanced heat transfer effect of the coil spring in the core flow region is related to the size of the coil and the fluid state.There is an optimal value of an interpolated coil spring.

关 键 词：换热管 强化传热 核心流 内插螺旋弹簧 数值分析 

分 类 号：TQ050.2[化学工程] TK124[动力工程及工程热物理—工程热物理]