Analysis for Design Parameters of High-performance and Highly Loaded Axial Compressors

Since the selection of design parameters of highly loaded compressor is beyond the range for conventional loaded compressors, it is necessary to carry out systematic analysis to determine the principle how to confirm aerodynamic conditions and blade geometric, so as to ensure that its comprehensive performance can reach a better state. In this paper, the numerical simulation method was used to establish a numerical database based on CDA profile, covering the selection interval of blade profile design parameters for highly loaded compressors, and developed a set of profile loss assessment model for highly loaded compressors, and established a low-dimensional analysis method for rational selection of design parameters for highly loaded compressors. And then, the influence of key aerodynamic and blade profile geometric parameters on the performance of the compressor at different loading levels is analyzed. The effects of inlet flow angle, reaction and blade solidity on compressor efficiency and compressor stall margin were analyzed, and the reasonable selection interval of these parameters in the design of high-load compressor was determined. The results show that the design of stator is more difficult and the influence of stator on compressor efficiency and stability is more obvious.