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用Fluent数值模拟的方法对光管、横向和纵向掠过的圆形肋片管、纵向流开槽伞形翅片管的换热和阻力特性进行比较,同时研究5种不同α角的开槽伞形翅片管的流动、换热、阻力特性。结果表明:当管型排布方式及雷诺数相同时,纵向流开槽伞形翅片管的传热系数为普通光管的1.4～1.8倍,横向和纵向掠过的圆形肋片管为光管的1.1～1.5倍,不同α角的纵向流开槽伞形翅片管中,α=105°时的换热系数最高;开槽伞形翅片管的阻力是横向掠过的圆形肋片管阻力的0.25～0.75倍,但高于纵向掠过的圆形肋片管阻力,不同α角的纵向流开槽伞形翅片管中,α=105°时的阻力最小。
Fluent numerical simulation method was used to compare the heat transfer and resistance characteristics of the light pipe, circular fin tube transversely and longitudinally swept, and longitudinal fin tube Umbrella fin tube. Five kinds of grooves with different α angles Umbrella finned tube flow, heat transfer, resistance characteristics. The results show that when the tube arrangement and Reynolds number are the same, the heat transfer coefficient of the longitudinal flow tube umbrella finned tube is 1.4-1.8 times that of the ordinary tube, and the transverse and longitudinal tube fins 1.1 to 1.5 times of the light pipe, the longitudinal flow slotted umbrella finned tube with different α angle has the highest heat transfer coefficient at α = 105 °; the resistance of the slotted umbrella finned tube is the transversely swept circular Filament tube resistance of 0.25 ~ 0.75 times, but higher than the longitudinal brushing of the circular fin tube resistance, different α angle longitudinal flow slot Umbrella fin tube, α = 105 ° minimum resistance.