为了提升热传递效率并增强热交换性能，对一种结合环形内部鳍片与突出单元的复合强化热交换技术进行探讨，旨在创造一种创新的热交换结构。通过数值模拟方法，研究在雷诺数Re范围为8 000 ~ 20 000该结构的流动和热传递特性。分析结果显示，突出单元的布局以及4个参数（深度、半径、间距和数量）对热性能有显著影响。通过场协同理论解释了强化热传递机制。在最佳参数下，深度为2 mm、半径为特定值、间距为20 mm、数量为6个突出单元时，实现了最佳的热交换性能，与内部鳍片管相比，整体热传递性能提高了4.71% ~ 23.59%。增加深度、半径和数量，同时减少间距，虽然增强了热传递，但也增加了阻力，限制了整体热传递性能的增长。场协同分析表明，该结构促进了强烈的二次涡流，显著增强了速度场与温度场之间的协同效应。

To enhance heat transfer efficiency and improve thermal exchange performance, a composite enhanced thermal exchange technology was explored that combined annular internal fins with protruding units, aiming to create an innovative thermal exchange structure. Through numerical simulation methods, the flow and heat transfer characteristics of this structure were studied within the Reynolds number Re range is 8 000 ~ 20 000. The analysis results indicate that the layout of the protruding units and four parameters(depth, radius, spacing, and quantity) have a significant impact on thermal performance. The mechanism of enhanced heat transfer was explained using field synergy theory. Under optimal parameters, with a depth of 2 mm, a radius of a specific value, a spacing of 20 mm, and six protruding units, the best thermal exchange performance is achieved, with an overall heat transfer performance improvement of 4.71% ~ 23.59% compared to internal finned tubes. Increasing depth, radius, and quantity, while decreasing spacing, enhances heat transfer but also increases resistance, limiting the growth of overall thermal performance. Field synergy analysis shows that the structure promotes strong secondary vortices, significantly enhancing the synergy effect between the velocity field and the temperature field.