05 - PropulsionRESEARCH ON FLOW HEAT TRANSFER CHARACTERISTICS OF HEAT EXCHANGER BASED ON BIONIC FRACTAL STRUCTUREB.-W. Yu¹, X. Yu¹, M.-G. Cao¹, X.-Z. Zhang¹, C.-L. Zhang¹, H.-B. Ji, Institute of Metal Research, Chinese Academy of Sciences, China; W.-T. Tong, Avic GuZhou YongHong Aviation Machinery Co, China; ¹Shenyang Aeroengine Research Institute, China In this paper, based on the bionic fractal idea, a typical alveolar pores heat exchanger was designed, and the flow heat transfer in the heat exchanger was numerically simulated. The experimental parts were processed and experimented with 3D printing technology, and the numerical simulation results were verified. The results show that the typical alveolar pores heat exchanger has obvious advantages such as high heat transfer area, small pressure drop, and has good flow heat transfer characteristics. |