叶型接受孔对高位预旋供气系统流动温降影响的实验研究

For a high-radius pre-swirl system with a radius difference between nozzle and air supply hole, a vane-shaped receiver hole with axial angle was designed. The pressure, temperature and mass flow rate of some critical sections were measured on the stator and rotor, and compared with those of the pre-swirl system using runway-shaped receiver holes. Results show that the system pressure ratio gradually increases and the system temperature ratio decreases as the mass flow ratio increases. While with the rotating Mach number increasing under the condition of large mass flow ratio, the system pressure ratio increases slightly and the system temperature ratio decreases. Compared with the pre-swirl air supply system using runway-shaped receiver holes, the flow resistance of the rotor components is significantly reduced for the pre-swirl air supply system with vane-shaped receiver holes. Under experimental conditions, the specific work consumption is reduced by 23.9%, the system temperature drop efficiency increases by 13.7%, and the system temperature drop and system temperature drop efficiency reach 28.1 K and 0.58, respectively. The design idea of vane-shaped receiver hole may provide the basis to improve the system performance for a high-radius pre-swirl system with a radius difference between nozzle and air supply hole.