南京师范大学学报（工程技术版）2026，Vol.26Issue(2)：1-8,8.DOI:10.3969/j.issn.1672-1292.2026.02.0001
高压进气离心压气机失速特性数值模拟研究
Numerical Simulation of Stall Characteristics of High-Pressure Inlet Centrifugal Compressor
摘要
Abstract
To investigate the influence of unsteady flow on the operating range of a centrifugal compressor,a high-pressure inlet centrifugal compressor is selected as the research subject for a detailed analysis.This compressor employs a closed impeller design,and numerical simulations are conducted using CFX to examine the stall phenomenon at low flow rates and its impact on performance.The study explores the causes of stall under high-pressure inlet conditions and its behaviors during transient operations.The results indicate that the stall phenomenon primarily originates from flow separation at the leading edge of the blades,which subsequently affects the stability of the flow within the passage.Further analysis of both steady-state and transient flow fields reveals the nonlinear characteristics of pressure fluctuations during stall conditions,and investigates the relationship between low-frequency oscillations induced by stall and the blade passing frequency.These findings provide a theoretical foundation for optimizing the design of centrifugal compressors and enhancing their performance,while also laying the groundwork for future exploration of stall control strategies.关键词
离心压气机/数值模拟/失速特性/信号分析Key words
centrifugal compressor/numerical simulation/stall characteristic/signal analysis分类
能源科技引用本文复制引用
李政君,左志涛,杨宏旻..高压进气离心压气机失速特性数值模拟研究[J].南京师范大学学报（工程技术版）,2026,26(2):1-8,8.基金项目
江苏省碳达峰碳中和科技创新专项资金(重大创新载体建设)项目(BM2022001). （重大创新载体建设）
