【摘要】 针对目前北方缺水地区空冷机组应用较多的直接空冷蛇形单排翅片管，利用Fluent软件中的流-热耦合数值分析方法，对全尺寸下原始单排蛇形翅片管以及改变翅片上边界与扁平管表面角度的新型翅片进行数值分析，对比空气侧传热系数、流动阻力系数以及综合传热性能。研究结果表明，随着风速的增加，空气侧传热系数不断变大，在改变翅片上边界与扁平管表面角度后，除了α=1°、u=4m/s、5m/s时，其它情况下空气侧传热系数、流动阻力以及综合传热性能都得到了提升，α=2°时的翅片性能更加稳定，可以作为实际建设的参考。更多还原

【Abstract】 Aiming at the direct air-cooled serpentine single-row finned tube used in air-cooling units in water-deficient areas in the north, the flow-thermal coupling numerical analysis method in the Fluent software is used to analyze the original single-row serpentine finned tube under full size and change the fin. Numerical analysis of the new fins with the angle between the on-chip boundary and the flat tube surface was carried out to compare the air-side heat transfer coefficient, the flow resistance coefficient and the comprehensive heat transfer performance. The research results show that with the increase of wind speed, the heat transfer coefficient on the air side continuously increases. After changing the angle between the upper boundary of the fin and the surface of the flat tube, except when α=1°, u=4 m/s, 5 m/s, other situations The heat transfer coefficient, flow resistance and comprehensive heat transfer performance of the lower air side have been improved. The performance of the fin at α=2° is more stable, which can be used as a reference for actual construction.更多还原