In the present study, hydrofoil ribs made from NACA 2412 profile were mounted in a novel way at all walls of microchannel heat sink with various configurations to improve its thermo-hydraulic characteristics. The various configurations include comparison between staggered and aligned arrangements, and the variation of rib spacing between two consecutive hydrofoils (Sr = 0.2–0.6 mm) at a constant cord length (Cr = 0.4 mm). The study was performed with the help of commercially available computational fluid dynamics tool, ANSYS Fluent. The performance of various configurations were compared with each other and with smooth channel using parameters like friction factor (f), Nusselt number (Nu), and overall performance is determined by thermal enhancement factor ( $\eta$ ). The results of this study showed that the best performance is achieved by the configuration where rib spacing becomes equal to cord length (Sr = 0.4 mm). Moreover, it has been observed in this study that staggered configuration performed better than aligned configuration.

中文翻译：

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多配置NACA 2412水翼肋片微通道散热器的热流体特性

在本研究中，由 NACA 2412 型材制成的水翼肋以新颖的方式安装在具有各种配置的微通道散热器的所有壁上，以改善其热液压特性。各种配置包括交错排列和对齐排列之间的比较，以及在恒定绳索长度 (Cr = 0.4 mm) 下两个连续水翼 (Sr = 0.2–0.6 mm) 之间的肋间距变化。该研究是在商用计算流体动力学工具 ANSYS Fluent 的帮助下进行的。使用摩擦系数 (f)、努塞尔数 (Nu) 等参数将各种配置的性能相互比较，并与平滑通道进行比较，整体性能由热增强系数 ( $\eta$ ）。这项研究的结果表明，肋间距等于帘线长度 (Sr = 0.4 mm) 的配置可实现最佳性能。此外，在本研究中观察到，交错配置比对齐配置表现更好。