Optimization of Return Channels of Centrifugal Compressor Stages Using IOSO

Abstract

In this work, a multi-criteria optimization of the return channel with a return channel blades was carried out taking into account the parameter fields behind the first stage of a centrifugal compressor. The methodology of direct optimization calculations in IOSO software for return channels has been developed. According to the results of multi-criteria optimization, a Paretto-multiplicity of solutions for the pressure recovery ratio and flow irregularity at the outlet has been obtained, from which the optimum point with the maximum value of pressure recovery ratio has been selected. CFD calculation of the optimized return channel with the first stage of a centrifugal compressor was performed, according to the results of which the increase in the pressure recovery ratio of the return channel was 5.5%.