Aerodynamic design of ultra-high-load axial flow compressor

In this paper, the use of a negative air outlet Angle super bending diffuser blade, the compressor rotor blade design, to achieve the given pressure ratio, flow, compressor ultra-high load, ultra-low speed design. In this paper, the design load coefficient of 1.7771, much higher than the conventional load coefficient 0.4. In the process of two-dimensional blade design, the automatic optimization design method is adopted. Computer numerical simulation results show that the designed compressor stage can reach the given design point flow rate and pressure ratio, and has a high stage efficiency, And because the rear section of the rotor blade channel convergence is not easy to produce flow separation, it has a large surge margin.