In this study, DNA-inspired wire coil (WC) inserts, namely double wire coil (DWC) and triple wire coil (TWC), were proposed for promoting the thermo-hydraulic performance of a plain tube. Triangular-in-shape WC fitted tubes were modeled in Ansys Workbench and numerically solved in Ansys Fluent. WC inserts with pitches (0.056 m, 0.112 m, 0.168 m), side lengths (0.005 m, 0.006 m) and clearance distances (0.001 m, 0.002 m) were analyzed through a fully developed turbulent flow with the Reynolds number ranging from 6,406−26,647. Detailed model validations were performed using the empirical data and experimental studies in the literature and good agreements were statistically achieved. Results reveal that the proposed inserts can significantly increase the heat transfer performance and performance evaluation criterion (PEC) by almost up to fivefold and 103% compared to those of a plain tube, respectively. DWC increases the PEC by ∼1.1 times the SWC fitted tube while TWC can increase the PEC by ∼1.14 times. Increasing the number of WC beyond three would not add benefits to the PEC considerably.

在这项研究中，提出了受 DNA 启发的线圈 (WC) 插入件，即双线圈 (DWC) 和三线圈 (TWC)，以提高普通管的热液压性能。三角形 WC 装配管在 Ansys Workbench 中建模，并在 Ansys Fluent 中进行数值求解。WC 刀片的节距（0.056 m、0.112 m、0.168 m）、边长（0.005 m、0.006 m）和间隙距离（0.001 m、0.002 m）通过完全发展的湍流进行分析，雷诺数范围为 6,406- 26,647。使用文献中的经验数据和实验研究进行了详细的模型验证，并在统计上取得了良好的一致性。结果表明，与普通管相比，所提出的插入件可以显着提高传热性能和性能评估标准 (PEC)，分别提高近 5 倍和 103%。DWC 使 PEC 增加了约 1.1 倍 SWC 安装管，而 TWC 可以增加 PEC 约 1.14 倍。将 WC 的数量增加到三个以上不会显着增加 PEC 的好处。