机构地区: 华南理工大学化学与化工学院传热强化与过程节能教育部重点实验室
出 处: 《石油化工设备》 2007年第6期42-45,共4页
摘 要: 在缩放管内间隔插入多个旋流片的通道中,流体流动呈现周期性自旋流。用数值模拟方法对含旋流片缩放管内旋流片间距对空气湍流流动和传热的影响进行了分析,得到了管内流场和温度场以及传热膜系数、单位长度压降与雷诺数的关系,以获得较佳的复合传热性能。 The fluid inserted with regularl characteristics of heat flows with periodic self-sustaini y spaced twisted-tape elements. transfer and flow resistance for ng swirl flow in a converging-diverging tube The influences of twisted-tape pitch on the air turbulent flow were analyzed by numerical simulation. For a further compound enhancement of heat transfer,the velocity and temperature profiles,the effects of Reynolds number on heat transfer coefficient and pressure drop were obtained.
领 域: [化学工程] [石油与天然气工程]