Investigations on the Effect of Inclination Angle on the Aerodynamic Performance of a Two-Stage Centrifugal Compressor of a Proton Exchange Membrane Fuel Cell System
This study examines how leading-edge inclination angles affect a two-stage centrifugal compressor’s aerodynamic performance using numerical and experimental methods. Five impellers with varied inclination configurations were designed for both stages. The results show that negative inclination improv...
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| Format: | Article |
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MDPI AG
2025-06-01
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| Online Access: | https://www.mdpi.com/1996-1073/18/12/3199 |
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| author | Wenke Wang Dengfeng Yang Li Guo Rui Wu Xiangyi Zhou Qian Zhang Qingyi Kong Leon Hu |
| author_facet | Wenke Wang Dengfeng Yang Li Guo Rui Wu Xiangyi Zhou Qian Zhang Qingyi Kong Leon Hu |
| author_sort | Wenke Wang |
| collection | DOAJ |
| description | This study examines how leading-edge inclination angles affect a two-stage centrifugal compressor’s aerodynamic performance using numerical and experimental methods. Five impellers with varied inclination configurations were designed for both stages. The results show that negative inclination improves the pressure ratio and efficiency under near-choke conditions, with greater enhancements in the low-pressure stage. Positive inclination significantly boosts the pressure ratio and efficiency under near-stall conditions, particularly in the low-pressure stage. Negative inclinations optimize blade loading and choke flow capacity, while effectively reducing incidence angle deviations induced by interstage pipeline distortion and decreasing outlet pressure fluctuation amplitude in the high-pressure stage. Positive inclinations delay flow separation, suppress tip leakage vortices, and extend the stall margin. |
| format | Article |
| id | doaj-art-a8eefe65a6c44ce7a7c5a62c960698aa |
| institution | Matheson Library |
| issn | 1996-1073 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj-art-a8eefe65a6c44ce7a7c5a62c960698aa2025-06-25T13:45:56ZengMDPI AGEnergies1996-10732025-06-011812319910.3390/en18123199Investigations on the Effect of Inclination Angle on the Aerodynamic Performance of a Two-Stage Centrifugal Compressor of a Proton Exchange Membrane Fuel Cell SystemWenke Wang0Dengfeng Yang1Li Guo2Rui Wu3Xiangyi Zhou4Qian Zhang5Qingyi Kong6Leon Hu7School of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, ChinaSchool of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, ChinaSchool of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, ChinaSchool of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, ChinaSchool of Control Engineering, Northeastern University at Qinhuangdao, Qinhuangdao 066004, ChinaSchool of Mechanical Engineering, Hebei University of Technology, Tianjin 300401, ChinaDepartment of Rail Transit, Hebei Jiaotong Vocational and Technical College, Shijiazhuang 050035, ChinaFord Motor Company, Dearborn, MI 48124, USAThis study examines how leading-edge inclination angles affect a two-stage centrifugal compressor’s aerodynamic performance using numerical and experimental methods. Five impellers with varied inclination configurations were designed for both stages. The results show that negative inclination improves the pressure ratio and efficiency under near-choke conditions, with greater enhancements in the low-pressure stage. Positive inclination significantly boosts the pressure ratio and efficiency under near-stall conditions, particularly in the low-pressure stage. Negative inclinations optimize blade loading and choke flow capacity, while effectively reducing incidence angle deviations induced by interstage pipeline distortion and decreasing outlet pressure fluctuation amplitude in the high-pressure stage. Positive inclinations delay flow separation, suppress tip leakage vortices, and extend the stall margin.https://www.mdpi.com/1996-1073/18/12/3199PEMFCleading-edge inclination angleload fluctuationnegative inclination anglesinlet distortionaerodynamic performance |
| spellingShingle | Wenke Wang Dengfeng Yang Li Guo Rui Wu Xiangyi Zhou Qian Zhang Qingyi Kong Leon Hu Investigations on the Effect of Inclination Angle on the Aerodynamic Performance of a Two-Stage Centrifugal Compressor of a Proton Exchange Membrane Fuel Cell System Energies PEMFC leading-edge inclination angle load fluctuation negative inclination angles inlet distortion aerodynamic performance |
| title | Investigations on the Effect of Inclination Angle on the Aerodynamic Performance of a Two-Stage Centrifugal Compressor of a Proton Exchange Membrane Fuel Cell System |
| title_full | Investigations on the Effect of Inclination Angle on the Aerodynamic Performance of a Two-Stage Centrifugal Compressor of a Proton Exchange Membrane Fuel Cell System |
| title_fullStr | Investigations on the Effect of Inclination Angle on the Aerodynamic Performance of a Two-Stage Centrifugal Compressor of a Proton Exchange Membrane Fuel Cell System |
| title_full_unstemmed | Investigations on the Effect of Inclination Angle on the Aerodynamic Performance of a Two-Stage Centrifugal Compressor of a Proton Exchange Membrane Fuel Cell System |
| title_short | Investigations on the Effect of Inclination Angle on the Aerodynamic Performance of a Two-Stage Centrifugal Compressor of a Proton Exchange Membrane Fuel Cell System |
| title_sort | investigations on the effect of inclination angle on the aerodynamic performance of a two stage centrifugal compressor of a proton exchange membrane fuel cell system |
| topic | PEMFC leading-edge inclination angle load fluctuation negative inclination angles inlet distortion aerodynamic performance |
| url | https://www.mdpi.com/1996-1073/18/12/3199 |
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