This paper represents a three-dimensional numerical simulation to figure out the application of the DBD plasma actuators as an active vortex generator system to enhance heat transfer through a smooth rectangular channel. This system as an active flow control device consists of a pair of DBD plasma actuators, which have been implemented asymmetrically on the bottom wall by several angles of attack to induce the cross airflow. The investigation deals with the optimum angle of attack according to different Reynolds number (Re) ranging from 2300 to 3800 and alternating current voltages of 31–37 kV. The heat transfer rate, pressure drop, and overall performance have been assessed. The results show the optimum choice for the angles of attack was 30° among various flow conditions. By this design, at the voltage of 37 kV and Re of 2300, the average Nusselt number (Nu_m) increased about 56% and heat transfer performance factor (\(\eta\)) increased about 111%. Furthermore, at the lowest applied voltage (31 kV) and highest Reynolds number (3800), the value of Nu_m rises to 41% and 59%, respectively. Thereupon, as the next optimum choices, angle of attack of 45° at high Re and angle of attack of 15°at low Re enhanced heat transfer performance.

本文提供了一个三维数值模拟，以说明DBD等离子体致动器作为主动涡流发生器系统的应用，以增强通过光滑矩形通道的传热。该系统作为主动流量控制设备，由一对DBD等离子体致动器组成，这些致动器已在底壁上非对称地以几个攻角实现，以引起横向气流。该研究根据2300至3800范围内的不同雷诺数（Re）和31-37 kV交流电压来处理最佳迎角。已经评估了传热速率，压降和整体性能。结果表明，在各种流动条件下，迎角的最佳选择为30°。通过这种设计，在37 kV的电压和2300的Re下，_m）增加了约56％，传热性能因子（\（\ eta \））增加了约111％。此外，在最低施加电压（31 kV）和最高雷诺数（3800）时，Nu _m的值分别升至41％和59％。因此，作为下一个最佳选择，高Re时的攻角为45°，而低Re时的攻角为15°，可以提高传热性能。