Under the severe energy environment, hydrogen aviation is experiencing significant development. As a crucial part of thermal management system of hydrogen aviation, the heat exchanger demands targeted design and optimization. Research shows that the integration of bionics with the design of heat transfer structures is of great advantage for the enhancement of the overall performance of the heat exchanger. The peregrine falcon features the fastest known flight and dive speeds of any bird in nature, the unique structure of the wings enables an extremely low resistance to be maintained during flight, and inspired by this, a bionic fin is proposed in this paper. Numerical simulations on the flow and heat transfer of the peregrine falcon bionic airfoil fins are carried out, and the specialized mechanisms of the fins is analyzed. Comparison between the effects of bionic and normal airfoil fins on the overall performance was carried out. The results indicate that the localized strong vortices generated by the bionic airfoil fin can maintain excellent overall heat transfer performance at low flow resistance. Finally, the key structural parameters of the fins are investigated and optimized, and the new correlation equations of the Nusselt number as well as the friction factor are proposed.
Zheng et al. (Fri,) studied this question.