为了深入挖掘三角翼纵向涡发生器在两个相对壁面布置的强化换热潜力，采用数值模拟方法，在雷诺数3 000~18 000的范围内研究了5种纵向涡发生器配置的流动换热情况，配置方式包括单面布置的共同上、下流配置，双面布置的共同上、下流配置，以及混合配置。结果表明：纵向涡可以〖JP〗很好地提高场协同效果，换热强度不完全取决于通道中的二次流强度，还取决于通道中的场协同性；在所有配置中，混合配置具有最高的二次流强度、最佳的场协同效果以及换热性能，可以将光滑通道的Nu提高28.3%~353%；另外4种配置可分别将光滑通道的Nu提高21.4%~32.0%，20.0%~29.2%，26.3%~34.3%和237%~28.0%；建议选用Re<6 000范围内的混合配置，此时其具有1.03~1.10的综合换热因子以及1.32~1.35的Nu/Nu0。

In order to further explore the potential of heat transfer enhancement of delta winglet longitudinal vortex generators arranged on two opposite walls, the flow and heat transfer of five longitudinal vortex generator configurations including commonflowup configuration on one wall, commonflowdown configuration on one wall, commonflowup configuration on two walls, commonflowdown configuration on two walls and mixed configuration were studied by numerical simulation in the range of Reynolds number from 3 000 to 18 000. The results show that the longitudinal vortex can improve the field synergy effect. The heat transfer intensity not only depends on the secondary flow intensity in the channel, but also depends on the field synergy; among all configurations, the mixed configuration has the highest secondary flow intensity, the best field synergy effect and the best heat transfer performance, which can increase the Nu of the smooth channel by 28.3-35.3%. The other four configurations can increase the Nu of the smooth channel by 21.4-32%, 20.0-29.2%, 26.3-34.3% and 23.7-28.0%, respectively; mixed configuration with Re<6 000 is recommended, which has a TPF of 1.03-1.10 and a Nu/Nu0 of 1.32 - 1.35.

TK124

国家科技重大专项（2017I00070008）