Friction and heat transfer characteristics of flow through square duct with twisted tape insert
Friction and heat transfer characteristics of flow through square duct with twisted tape insert
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DOI：
10.1016/s0017-9310(02)00355-1
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发表时间：
2003-02-01
影响因子：
5.2
通讯作者：
Date, AW
中科院分区：
文献类型：
--
作者：
Ray, S;Date, AW
本文用数值方法预测了在矩形截面管道中插入一条宽度等于管道边长的扭带后的层流和湍流流动与传热特性。在轴向和周向恒定壁面热流条件下预测了传热特性。因此，流动和传热在轴向方向上周期性地充分发展。摩擦因子和努塞尔数的关联来自预测数据。摩擦的相关性进行了比较与实验数据，这被发现是在合理的良好的协议与对方，层流和湍流。(C)2002爱思唯尔科技有限公司版权所有。
This paper presents numerical prediction of characteristics of laminar, as well as, turbulent flow and heat transfer in a square sectioned duct inserted with a twisted tape, whose width equals the length of the duct side, The heat transfer characteristics are predicted under axially and peripherally constant wall heat flux conditions. As such, the flow and heat transfer are periodically fully developed in axial direction. Correlations for friction factor and Nusselt number are derived from the predicted data. The correlation for friction is compared with the experimental data, which are found to be in reasonably good agreement with each other, for both laminar and turbulent flows. (C) 2002 Elsevier Science Ltd. All rights reserved.