This work numerically explores the thermal-hydraulic performance of twisted oval tube with three cross sectioned wire coils including circular, equilateral and square cross sectioned wire coils in turbulent regime. The effects of geometric shape, direction of rotation and the orientations of wire coil's cross section were also investigated. Polyhedral mesh is adopted and water is used as working fluid. The obtained results are compared with those of the twisted oval tube without wire coils. Our results show that using twisted tube and wire coil together can further enhance heat transfer rate and pump consumption while the PEC decreased. Compared with twisted oval tube only, the equilateral cross sectioned wire coil has the best thermal-hydraulic performance. The averaged increase ratio of Nu is 45.92% and the averaged f is 674.86%.

这项工作从数值上探讨了在具有湍流状态下具有三个横截面的线圈（包括圆形，等边和方形横截面的线圈）的椭圆形双绞线管的热工液压性能。还研究了几何形状，旋转方向和线圈横截面方向的影响。采用多面体网格，以水为工作液。将获得的结果与不带线圈的扭曲椭圆管的结果进行比较。我们的结果表明，同时使用双绞线管和线圈可以进一步提高传热速率和泵的消耗，同时降低PEC。与仅扭曲的椭圆形管相比，等边横截面的线圈具有最佳的热工性能。Nu的平均增长率是45.92％，平均f是674.86％。