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采用数值模拟方法对加装矩形小翼纵向涡发生器的H形翅片换热机理进行研究。研究表明:随着来流速度的增加,回流区里的气流温度逐渐升高;相同雷诺数时,随着攻角的增大,加装纵向涡发生器的单H形翅片的进出口温差、压力损失、努赛尔数、欧拉数和换热因子都增大,而综合性能先增大后减小;随着雷诺数的增加,压力损失、努赛尔数增大,进出口温差、欧拉数、换热因子和综合性能都减小。
The numerical simulation method was used to study the heat transfer mechanism of H-finned fins with rectangular winglets. The results show that the temperature of the airflow in the recirculation zone gradually increases with the increase of the flow rate. With the increase of the angle of attack, the temperature difference between the inlet and outlet of a single H-shaped fin with longitudinal vortex generator , Pressure loss, Nusselt number, Euler number and heat exchange coefficient all increase, while the overall performance first increases and then decreases. With the increase of Reynolds number, pressure loss, Nusselt number and temperature difference between import and export , Euler number, heat exchange factor and overall performance are reduced.