涡轮预旋供气系统跑道型接受孔对性能影响的实验评估

The receiver hole plays an important role in the flow and heat transfer in the pre-swirl system. In order to compare the effects of different shapes of receiver hole on the performance of the pre-swirl system, the influences of the receiver holes of three typical structures of straight runway-shaped, long runway-shaped, and inclined runway-shaped on the temperature drop and power consumption of the pre-swirl system under the design point parameters are studied by experiments, and the flow and temperature drop characteristics of the inclined runway-shaped receiver model are mainly studied. The results show that compared with the pre-swirl system with straight runway-shape and long runway-shape, the flow resistance of the rotor components in the system with inclined runway-shaped is significantly reduced. The system temperature drop is 24.9K and the power consumption is 10.04kW at the design point; the temperature drop efficiency is increased by 3.5%, the system power consumption is reduced by 4.2% and the entropy is reduced by 9.8% compared with the basic model. When the rotating Mach number is fixed, the pressure ratio and temperature ratio of the pre-swirl system increase with the increase of the flow ratio; when the flow ratio is constant, the rotating Mach number has little effect on the pressure ratio of the system, and the temperature drop of the system first increases and then decreases with the increase of the rotating Mach number, showing a quadratic function relationship.