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| Stability and Efficiency Improvement of Centrifugal Compressor and the Application at High Altitude |
| Received:May 17, 2017 Revised:October 15, 2017 |
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| DOI：10.7643/issn.1672-9242.2017.10.004 |
| KeyWord:high altitude centrifugal compressor blade lean and sweep casing treatment |
| Author | Institution |
| DONG Su-rong |
Military Transportation University a. Military Vehicle Department, Tianjin , China |
| LIU Zhuo-xue |
Military Transportation University b. Postgraduate Training Brigade, Tianjin , China |
| LIU Rui-lin |
Military Transportation University a. Military Vehicle Department, Tianjin , China |
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| Abstract: |
| Objective To provide a new method to improve the aerodynamic performance of centrifugal compressor at high altitude. Methods This paper enumerated the technologies of bowed/swept blade and casing treatment, illustrated the principle of enhancing the efficiency and enlarging the stable working range of centrifugal compressor, and made a comparative analysis on the aerodynamic performance of the original impeller and the swept-blade impeller under the altitude of 5500 m. Results Compared with the original impeller, the pressure ratio of the optimized impeller could be increased by 3.09% at most. The efficiency could be increased by 0.71%. The flow loss in the impeller runner was reduced. And the aerodynamic performance of the impeller at high altitude was improved. Conclusion It still has some guiding for the researching on the application of the casing treatment for centrifugal compressor at high altitude. |
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