The aerothermal performance of a novel compound heat transfer enhancement method is assessed by measuring the full-field endwall Nusselt number map and Fanning friction factors of a rotating two-pass furrowed channel roughened by angled ribs. The tested Reynolds numbers, rotation numbers, and buoyancy numbers lie in the respective ranges of 5000–15,000, 0–0.4, and 0–0.183. Under the combined effects of the ribs and furrowed passages, the endwall-average Nusselt numbers of the static channel are upraised to 4.9–4.77 times the Dittus–Boelter levels. With rotation, the worst cooling condition develops at a rotation number of 0.05 with the spotted heat-transfer impediments to 0.77 and 0.82 times the static channel references on the leading and trailing endwalls, respectively. By raising the rotation number from 0 to 0.4, the Nusselt numbers on the stable endwalls are initially reduced from the static-channel levels and then converted to increase with the rotation number; however, the friction factors increase continuously. Over the rotating unstable endwalls, both the Nusselt numbers and the friction factors increase along with rotation number. When the buoyancy number is increased, the local Nusselt numbers on the leading and trailing endwalls increase with a negligible impact on their distribution patterns. The thermal-performance indexes of the rotating channel are reduced by increasing Reynolds number. To aid the relevant applications, two sets of experimental correlations are devised to determine the regional average Nusselt number and Fanning friction factor of the rotating two-pass furrowed channel fitted with angled ribs.

一种新型复合传热增强方法的气动热性能是通过测量全场端壁努塞尔数图和由斜肋粗糙化的旋转两通道沟槽通道的范宁摩擦系数来评估的。测试的雷诺数、旋转数和浮力数分别位于 5000-15,000、0-0.4 和 0-0.183 的范围内。在肋骨和沟槽通道的共同作用下，静态通道的端壁平均 Nusselt 数提高到 Dittus-Boelter 水平的 4.9-4.77 倍。随着旋转，最坏的冷却条件出现在 0.05 的旋转次数，斑点传热障碍分别是前端壁和尾端壁上静态通道参考的 0.77 倍和 0.82 倍。通过将旋转数从 0 提高到 0.4，稳定端壁上的 Nusselt 数最初是从静态通道水平减少，然后随着旋转数转换为增加；然而，摩擦系数不断增加。在旋转不稳定端壁上，努塞尔数和摩擦系数都随着旋转数的增加而增加。当浮力数增加时，前后端壁上的局部努塞尔数增加，对其分布模式的影响可以忽略不计。增加雷诺数会降低旋转通道的热性能指标。为了帮助相关应用，设计了两组实验相关性来确定装有斜肋的旋转两通道沟槽通道的区域平均努塞尔数和范宁摩擦系数。