力学与实践 ›› 2010, Vol. 32 ›› Issue (2): 26-31.DOI: 10.6052/1000-0879-2009-006

• 应用研究 • 上一篇    下一篇

多级轴流压气机多叶排调节扩稳优化分析

吴虎 孙娜   

  1. 西北工业大学
  • 收稿日期:2009-01-06 修回日期:1900-01-01 出版日期:2010-04-08 发布日期:2010-04-08

NUMERICAL OPTIMIZATION OF A STATOR VANE SETTING FOR ENLARGING AERODYNAMIC STABILITY MARGIN IN MULTISTAGE AXIAL-FLOW COMPRESSORS

WU HU   

  • Received:2009-01-06 Revised:1900-01-01 Online:2010-04-08 Published:2010-04-08

摘要: 整理和归纳出合适的流动损失和落后角模型,并将其与逐排基元叶片算法相结合, 给出了计算多级轴流压气机特性工程方法; 进一步将其与复合形优化方法相结合,对多级轴 流压气机多叶排调节扩稳进行了优化模拟,并应用于某8级轴流压气机算例计算. 结果表明, 在部分转速工况下,采用带性能约束的优化调节在不明显降低性能的同时能够显著减小多级 压气机不稳定点流量;在设计工况下,采用适当的变几何优化调节不仅能明显扩大压气机稳 定工作范围,还能明显提高压气机绝热效率.

关键词: 轴流压气机, 变几何, 气动稳定性, 优化, 性能

Abstract: Practicable loss and deviation models for transonic and subsonic axial compressors are established. They are combined with the blade row-by-blade row cascade model. A method for calculating off-design performance of multi-stage axial compressors is developed, based on those models. Box's optimization technique is then used to optimize the stator vane stagger setting. The methodology has been incorporated into a computer program and is validated by using data from an eight-stage transonic axial compressor. Results show that the variable stator stagger setting is a powerful method to rematch stages, which can be used to enlarge aerodynamic stability range of multi-stage compressors.

Key words: axial flow compressor, variable stagger, aerodynamic stability, optimization, performance