Optimized Preliminary Design of a Multistage Low-Speed Axial FLow Compressor

Abstract

This paper proposes a technique based on a MAT-LAB code capable of getting an optimized preliminary design of an efficient low-speed compressor qualified for laboratory experiments with relatively low cost. The code was made to design five repeated compressor stages on two steps conducted iteratively, namely “mean line and radial design” to determine the optimum compressor geometry and then the “off-design” to test the stability of the design in other working conditions. The optimization tool minimizes a flexible cost function which can be changed if needed to get different designs. A certain cost function was chosen, the results of the design corresponding to it lived up to expectations. Some aerodynamic cases were simulated using Ansys to verify the results of the chosen design.