Design Optimization of a Multistage Axial Flow Compressor Based on Full-Blade Surface Parameterization and Phased Strategy

Table 5

Performance comparison before and after optimization at the design point in the two phases.

Design point	Mass flow (kg/s)	Total pressure ratio	Adiabatic efficiency	Surge margin
Original blade	112.1	3.54	0.8207	10.2%
Optimized blade of the first phase	112.7	3.55	0.8255	15%
Optimized blade of the second phase	112.2	3.55	0.8274	13.3%
Relative change	+0.08%	+0.28%	+0.67%	+3.1%