Numerical and experimental analysis of laminar fluid flow and forced convection heat transfer in a grooved duct
Numerical and experimental analysis of laminar fluid flow and forced convection heat transfer in a grooved duct
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DOI：
10.1016/s0017-9310(05)80070-5
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发表时间：
1993
影响因子：
5.2
通讯作者：
B. Farhanieh;C. Herman;B. Sundén
中科院分区：
文献类型：
--
作者：
B. Farhanieh;C. Herman;B. Sundén
本文采用数值和实验方法研究了槽壁面管道内层流流动和换热特性。管道的平面壁保持低温，而沟槽壁加热并保持均匀温度。实验中采用了全息干涉法。利用可视化的温度场重建温度分布，并以此计算换热系数。采用有限体积法对椭圆流的控制方程进行了数值求解。得到了雷诺数在100 ~ 1760范围内的结果。数值计算得到的局部努塞尔数与实验值吻合较好。流线图解释了流体流动对努塞尔数和压降的影响。局部努塞尔数随着雷诺数的增加而增加。然而，压力降的损失很大。
A numerical and experimental investigation of laminar fluid flow and heat transfer characteristics in a duct with a grooved wall is presented. The plane wall of the duct is kept cold whereas the grooved wall is heated and kept at a uniform temperature. In the experiments, holographic interferometry was applied. The visualized temperature fields were used to reconstruct temperature profiles and from these heat transfer coefficients were evaluated. The governing equations are solved numerically by a finite-volume method for elliptic flows. The results are obtained for Reynolds number ranging from 100 to 1760. The numerically calculated local Nusselt numbers are in good agreement with the obtained experimental values. The streamline plots explain the influence of the fluid flow on the Nusselt number and the pressure drop. The local Nusselt number increases by increasing the Reynolds number. However, the pressure drop penalty was high.