Abstract A numerical investigation was performed to study total entropy generation due to forced convection inside the partially heated channel with staggered semi-porous fins. A finite volume code has been utilized to solve the governing equations which are based on the volume-averaging method. Results declared that increasing Reynolds number to Re = 100 comes up with about 44% more total entropy generation compared to Re = 50. At particular semi-porous fin percentage (SFP = 40) generation of total entropy encounters a minimum point, which is identical for all Reynolds numbers. Utilizing semi-porous fins with Darcy number below 10−4 has not any noticeable effect on total entropy generation through various SFPs, but at higher Darcy number such as Da = 10−2, total entropy generation decreases almost 14% compared to Da = 10−8. Also, there is a minimum point for total entropy generation for Da ≥ 10−4, which is different for each Darcy number and the minimum point moves toward higher SFP values as the Darcy number increases. In addition, applying higher Ke and increasing fins' length or width results in more total entropy generation.

中文翻译：

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交错半孔翅片矩形通道总熵产生的数值研究

摘要 对半孔交错翅片部分加热通道内强制对流产生的总熵进行了数值研究。有限体积代码已被用于求解基于体积平均法的控制方程。结果表明，与 Re = 50 相比，将雷诺数增加到 Re = 100 产生的总熵增加了约 44%。在特定的半孔鳍百分比 (SFP = 40) 下，总熵的产生遇到了一个最小值点，这是相同的对于所有雷诺数。使用达西数低于 10-4 的半多孔鳍对通过各种 SFP 产生的总熵没有任何显着影响，但在更高的达西数（例如 Da = 10-2）下，总熵产生与 Da = 10 相比降低了近 14% －8。还，对于 Da ≥ 10−4 的总熵生成有一个最小值点，每个达西数都不同，并且随着达西数的增加，最小值点向更高的 SFP 值移动。此外，应用更高的 Ke 和增加鳍的长度或宽度会导致更多的总熵产生。