Off-Design Performance Prediction in a Transonic Axial Compressor Using Four-Quadrant-Analysis

Abstract

Abstract:

Abstract： Highly accurate performance prediction models based on the streamline curvature method for the through-flow analysis of transonic compressors was developed, of which the minimum loss incidence and off-design loss prediction model were modified. In addition, four-quadrant -analysis, an original method for off-design loss analysis, was proposed to redefine the composite of transonic compressor loss, to make a further exploration on the characteristic of loss at multiple operating conditions, and to reveal the loss distribution and growth law of transonic compressors to a certain extent. Detailed calculations of a highly loaded transonic compressor rotor with the newly developed model was conducted. The results show that the newly developed model and the four-quadrant-analysis method can reliably predict the overall performance and spanwise distribution of aerodynamic parameters at both design and offdesign operating conditions, providing a new idea for off-design performance prediction. In general, the newly developed model and analysis method can be of great service to engineering.

Key words: transonic compressor, through-flow calculation, off-design loss, minimum loss incidence

CLC Number:

V 231
TK 474

XU Xi,QIANG Xiaoqing,TENG Jinfang. Off-Design Performance Prediction in a Transonic Axial Compressor Using Four-Quadrant-Analysis[J]. Journal of Shanghai Jiaotong University, 2015, 49(09): 1416-1421.

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