Abstract In this study, flow structure and heat transfer characteristics of the novel channel, namely: the curved-corrugated channel, are numerically studied using ZnO-water nanofluid and the presence of E-shaped baffles. The influences of corrugations, baffles, and geometric parameters; gap ratio (GR = 0.2,0.3,0.4, and 0.5), blockage ratio (BR = 0.2,0.25,0.3, and 0.35), and pitch angle (β = 10°, 12.5°, and 15°) at different Reynolds number (8000–32,000) and volume fraction of ZnO particles (0–4%) are evaluated using thermal-hydraulic performance method. The results reveal that the formation of vortex flow and increased turbulence due to effects of corrugations and baffles can improve the heat transfer enhancement. Tested channel with baffle is superior to the other without baffle in thermal-hydraulic performance factor (THPF), and at lowest pitch angle 10° provides the best THPF. Reducing the gap ratio and increasing the blockage ratio, i.e. 0.2 and 0.35, yields the best THPF at 2.57. New correlations for Nusselt number and friction factor for baffled curved-corrugated channel with using nanofluid are also reported.

中文翻译：

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一种新型弯曲波纹通道模型：纳米流体的热工水力性能和设计参数

摘要 在这项研究中，使用 ZnO-水纳米流体和 E 形挡板的存在，数值研究了新型通道，即弯曲波纹通道的流动结构和传热特性。波纹、挡板和几何参数的影响；不同雷诺数下的间隙比（GR = 0.2、0.3、0.4和0.5）、阻塞比（BR = 0.2、0.25、0.3和0.35）和俯仰角（β = 10°、12.5°和15°） (8000–32,000) 和 ZnO 颗粒的体积分数 (0–4%) 使用热工水力性能方法进行评估。结果表明，由于波纹和折流板的作用，涡流的形成和湍流的增加可以改善传热增强。带挡板的测试通道在热工水力性能系数 (THPF) 方面优于其他无挡板的通道，最低俯仰角 10° 提供最佳 THPF。减小间隙比并增加阻塞比，即 0.2 和 0.35，产生 2.57 的最佳 THPF。还报告了使用纳米流体的折流弯曲波纹通道的 Nusselt 数和摩擦系数的新相关性。