The Control of Corner Separation with Parametric Suction Side Corner Profiling on a High-Load Compressor Cascade
Nowadays, with the increase of the thrust-to-weight ratio of the aero engines, the high aerodynamic load has made corner separation an issue for axial compressors. The complex three-dimensional flow field makes it challenging to suppress the corner separation, especially considering the performance...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-03-01
|
| Series: | Aerospace |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2226-4310/9/3/172 |
| _version_ | 1797447659648188416 |
|---|---|
| author | Xiangjun Li Jiezhong Dong Hua Chen Huawei Lu |
| author_facet | Xiangjun Li Jiezhong Dong Hua Chen Huawei Lu |
| author_sort | Xiangjun Li |
| collection | DOAJ |
| description | Nowadays, with the increase of the thrust-to-weight ratio of the aero engines, the high aerodynamic load has made corner separation an issue for axial compressors. The complex three-dimensional flow field makes it challenging to suppress the corner separation, especially considering the performance at multi-working conditions. To suppress the corner separation and reduce loss, the investigation in this paper proposed a new parametric suction side corner profiling method, which includes few variables but enables the flexible variation of the shape. A bi-objective auto-optimization design process for the corner profiling was carried out on a high-load linear compressor cascade, with the companion of end wall and blade profiling. The aim was to investigate the effective flow control rules for the corner separation and practical design guidelines for its geometry under multiple working conditions. The numerical results identified that the suction side corner profiling brings a much more dominant effect to corner separation than end wall profiling and blade profiling. The most critical flow control rule is to accelerate the climbing second flow on the bottom of the suction surface to suppress the reverse trend of the boundary layer and further relieve the corner separation. In addition, the design point and near-stall point have different well-fitting thicknesses and axial positions. A medium value between the design and near-stall well-fitting parameters will make the suction side corner profiling a best-matching case for a medium inflow condition and adequate performance at a range of conditions. |
| first_indexed | 2024-03-09T13:59:06Z |
| format | Article |
| id | doaj.art-8c928b22b4bc431f8837c3610bf44cff |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-09T13:59:06Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Aerospace |
| spelling | doaj.art-8c928b22b4bc431f8837c3610bf44cff2023-11-30T10:28:19ZengMDPI AGAerospace2226-43102022-03-019317210.3390/aerospace9030172The Control of Corner Separation with Parametric Suction Side Corner Profiling on a High-Load Compressor CascadeXiangjun Li0Jiezhong Dong1Hua Chen2Huawei Lu3Naval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian 116026, ChinaSchool of Power and Energy, Northwestern Polytechnical University, Xi’an 710072, ChinaNaval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian 116026, ChinaNaval Architecture and Ocean Engineering College, Dalian Maritime University, Dalian 116026, ChinaNowadays, with the increase of the thrust-to-weight ratio of the aero engines, the high aerodynamic load has made corner separation an issue for axial compressors. The complex three-dimensional flow field makes it challenging to suppress the corner separation, especially considering the performance at multi-working conditions. To suppress the corner separation and reduce loss, the investigation in this paper proposed a new parametric suction side corner profiling method, which includes few variables but enables the flexible variation of the shape. A bi-objective auto-optimization design process for the corner profiling was carried out on a high-load linear compressor cascade, with the companion of end wall and blade profiling. The aim was to investigate the effective flow control rules for the corner separation and practical design guidelines for its geometry under multiple working conditions. The numerical results identified that the suction side corner profiling brings a much more dominant effect to corner separation than end wall profiling and blade profiling. The most critical flow control rule is to accelerate the climbing second flow on the bottom of the suction surface to suppress the reverse trend of the boundary layer and further relieve the corner separation. In addition, the design point and near-stall point have different well-fitting thicknesses and axial positions. A medium value between the design and near-stall well-fitting parameters will make the suction side corner profiling a best-matching case for a medium inflow condition and adequate performance at a range of conditions.https://www.mdpi.com/2226-4310/9/3/172compressorcorner separationsecond flowloss |
| spellingShingle | Xiangjun Li Jiezhong Dong Hua Chen Huawei Lu The Control of Corner Separation with Parametric Suction Side Corner Profiling on a High-Load Compressor Cascade Aerospace compressor corner separation second flow loss |
| title | The Control of Corner Separation with Parametric Suction Side Corner Profiling on a High-Load Compressor Cascade |
| title_full | The Control of Corner Separation with Parametric Suction Side Corner Profiling on a High-Load Compressor Cascade |
| title_fullStr | The Control of Corner Separation with Parametric Suction Side Corner Profiling on a High-Load Compressor Cascade |
| title_full_unstemmed | The Control of Corner Separation with Parametric Suction Side Corner Profiling on a High-Load Compressor Cascade |
| title_short | The Control of Corner Separation with Parametric Suction Side Corner Profiling on a High-Load Compressor Cascade |
| title_sort | control of corner separation with parametric suction side corner profiling on a high load compressor cascade |
| topic | compressor corner separation second flow loss |
| url | https://www.mdpi.com/2226-4310/9/3/172 |
| work_keys_str_mv | AT xiangjunli thecontrolofcornerseparationwithparametricsuctionsidecornerprofilingonahighloadcompressorcascade AT jiezhongdong thecontrolofcornerseparationwithparametricsuctionsidecornerprofilingonahighloadcompressorcascade AT huachen thecontrolofcornerseparationwithparametricsuctionsidecornerprofilingonahighloadcompressorcascade AT huaweilu thecontrolofcornerseparationwithparametricsuctionsidecornerprofilingonahighloadcompressorcascade AT xiangjunli controlofcornerseparationwithparametricsuctionsidecornerprofilingonahighloadcompressorcascade AT jiezhongdong controlofcornerseparationwithparametricsuctionsidecornerprofilingonahighloadcompressorcascade AT huachen controlofcornerseparationwithparametricsuctionsidecornerprofilingonahighloadcompressorcascade AT huaweilu controlofcornerseparationwithparametricsuctionsidecornerprofilingonahighloadcompressorcascade |