不同流动角度下锯齿型错列翅片性能的试验研究Experimental Study on Offset Strip Fin Performance at Different Flow Angles
郭丽华,覃峰,陈江平,陈芝久,张文锋,冯宗会
摘要(Abstract)：
为了解流体在不同流动方向下锯齿型错列翅片的传热及阻力性能,定义了流体在翅片内的流动角度β,以单层翅片为测试对象进行试验研究,按照正交设计法并结合实际情况进行16组翅片的试件安排,得到了不同雷诺数下各翅片的传热及阻力特性。结果表明:当β从0°增大到90°时,翅片的传热因子和摩擦因子均增大;翅片齿距与齿高的增大都有利于提高翅片的传热性能,但同时摩擦损失也相应增大。通过对16组翅片的233个数据点进行拟合得到本试验条件范围内锯齿型翅片关于雷诺数、流动角度及各几何参数的传热因子和摩擦因子的试验关联式,传热因子的试验关联式对于97.4%的试验数据误差小于±15%,其平均偏差为5.21%;摩擦因子的试验关联式对于87.6%的试验数据误差在±15%内,其平均偏差为5.73%。
关键词(KeyWords)： 锯齿型错列翅片;流动角度;正交设计;传热因子;摩擦因子
基金项目(Foundation):
作者(Author): 郭丽华,覃峰,陈江平,陈芝久,张文锋,冯宗会
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