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在矩形翼的基础上,提出一种新型的八边形翼纵向涡发生器.在矩形通道内,通过试验比较了矩形翼和八边形翼纵向涡发生器的流动与传热特性.分别在Re相同和阻力损失相同的条件下,分析了不同纵向涡发生器的强化传热效果.结果表明:与矩形翼相比,八边形翼纵向涡发生器的强化传热效果更好,而阻力系数没有明显增加;在阻力损失相同的条件下,矩形翼和八边形翼纵向涡发生器的传热增强率小于在Re相同时的传热增强率.
On the basis of rectangular wing, a new type of octagon wing longitudinal vortex generator is proposed. The flow and heat transfer characteristics of rectangular vane and octagonal wing longitudinal vortex generator are compared in rectangular channel Re the same and the same loss of resistance, the effect of heat transfer enhancement of different longitudinal vortex generators is analyzed.The results show that the enhanced heat transfer of the octagon shaped longitudinal vortex generators is better than the rectangular ones, while the resistance The coefficient of heat transfer did not increase obviously. Under the same resistance loss, the enhancement of heat transfer between rectangular vane and octagon vortex generator was less than that of Re at the same time.