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