Application of nonlinear numerical optimization to design of turbomachinery part 1: multi-stage axial-flow compressor through-flow design

摘要

A new design technique for the multi-stage axial flow compressor is presented, in which a non-linear numerical optimization algorithm is combined with a pitch-line or a quasi-three dimensional streamline curvature through flow program. The newdesign system can obtain the axial flow compressor configuration which maximizes its efficiency with the given inlet mass flow and the pressure ratio under the constraints such as a stall parameter. The simultaneous optimization for all the stages ispossible in the pitch line based program. This result is followed by the optimization of the design parameter radial distribution in each stage by the quasi three dimensional program.