Study on S2 Flow Path Design and Three-dimensional Numerical Simulation Parameter Calibration in Axial Compressor

TL;DR

This paper presents a method combining S2 flow path design with 3D CFD simulation for axial compressors, improving design accuracy and performance metrics through parameter calibration and comparative analysis.

Contribution

It introduces an autonomous programming approach to calibrate S2 design parameters using 3D CFD data, enhancing compressor performance prediction.

Findings

Adiabatic efficiency increased by 0.5%

Surge margin increased by over 5%

Method verified as valid and feasible

Abstract

Aerodynamic design process of multi - stage axial flow compressor usually uses the way that combines the S2 flow design and three-dimensional CFD numerical simulation analysis. Based on Mr. Wu Zhonghua's " Three-dimensional flow theory ", aiming at the S2 flow design matching parameters and the three-dimensional CFD numerical simulation data, through autonomous programming, the S2 design parameter distribution and the corresponding CGNS format CFD calculation results are extracted. Then make the comparative analysis of the two and provide the modification suggestion of the design. The examples have been tested by the comparison and correction of the eight-stage axial flow compressor calculation and finally improve the design performance of the compressor design. The design adiabatic efficiency increases by 0.5%. The surge margin increases by more than 5%. The validity and feasibility of the method are verified.