In this paper, fluid flow and heat transfer characteristics in a channel equipped with two isothermal diamond blocks such as blocks filled with PCM's (during phase changing) to find out the optimum state in fluid flow and heat transfer behavior have been investigated. Different Reynolds and Prandtl numbers and different geometrical parameters such as the block size and location have been studied. The governing equations, including continuity, momentum, and energy, have been solved by the SIMPLE method. Results show that an increase in the block size and an increase in the distance of the blocks from the walls of the channel increases the friction factor and bulk temperature changing. Also, the ratio of the bulk temperature changes to friction factor for different Reynolds and Prandtl numbers shows an optimum state at a = 0.11 and 0.125 < b < 0.15. The results of this study could be used in designing air-conditioning systems or in microchannels equipped by blocks or ribs to...

中文翻译：

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菱形等温线块在通道的热传递和流动摩擦中的最佳尺寸和位置

在本文中，研究了在装有两个等温菱形块（例如填充PCM的块）中的通道中的流体流动和传热特性，以找出流体流动和传热行为的最佳状态。研究了不同的雷诺数和普朗特数以及不同的几何参数，例如块的大小和位置。通过SIMPLE方法已经解决了包括连续性，动量和能量在内的控制方程。结果表明，块尺寸的增加和块距通道壁的距离的增加会增加摩擦系数和整体温度变化。同样，对于不同的雷诺数和普朗特数，整体温度变化与摩擦因数的比率在a = 0.11和0.125 < b <0.15。这项研究的结果可用于设计空调系统或由块或肋骨装配的微通道，以...