Numerical research on the effect of synthetic heat jet on the temperature characteristics of airfoil

To investigate the influence of synthetic hot jets on the surface temperature distribution of airfoils in the hybrid anti-icing process combining thermoelectric systems and synthetic jet actuators, numerical simulations were conducted to study the temperature distribution of airfoils during one cycle of a synthetic hot jet under the condition of low-speed incoming flow. The effects of synthetic jet velocity, temperature, and outlet angle on the airfoil temperature control were studied. Results show that synthetic hot jets can effectively increase the average surface temperature of airfoils compared with uncontrolled states. Increasing the temperature of synthetic jets can increase the temperature of the whole wing surface, but the heating efficiency decreases. The temperature on the wing surface decreases first and then increases with the increase of synthetic jet velocity. For synthetic jets with different angles, the heating effect of forward jets is better than that of backward jets. The results provide support for improving the anti-icing performance of hybrid ice protection systems.