Analysis of casing treatment's impact on the axial compressor model stage characteristics

10th International Conference on Compressors and their Systems

Tribunskaia, K.^1 ; Kozhukhov, Y.V.^1

Department of Compressor, Vacuum and Refrigeration Engineering, Saint-Petersburg Polytechnical University, Saint-Petersburg, Russia^1

关键词: Axial compressors;    Casing treatment;    Compressor stage;    Geometry model;    High pressure ratio;    Maximum Efficiency;    Radial clearance;    Stage characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/232/1/012048/pdf
DOI  :  10.1088/1757-899X/232/1/012048

来源: IOP

【 摘 要 】

There are special requirements for the compressors of aircraft engines. They must ensure maximum efficiency in a maximally large stable work zone Due to a high pressure ratio these stages are more susceptible to the losses from radial clearance. One of the approaches to reduce such losses is the application of above-rotor devices. In the following study there is considered the impact of such treatments on the compressor stage performance. Despite the fact that there is a sufficient amount of research about this issue, their results are contradictory. The use of these devices can affect the characteristics of compressor stage performance both positively and negatively. This study was conducted using the methods of computational fluid dynamics and was based on the NASA Rotor-37 geometry model stage. Results were obtained through the comparison of the characteristics of stages with and without above-rotor devices.