Simulation of Casing Treatments of a Transonic Compressor Stage
This article presents the study of casing treatments on an axial compressor stage for improving stability and enhancing stall margin. So far, many simulations of casing treatments on single rotor or rotor-stator configurations were performed. But as the application of casing treatments in engines wi...
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| Format: | Article |
| Language: | English |
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Wiley
2008-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2008/657202 |
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| _version_ | 1832548461740818432 |
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| author | M. Hembera H.-P. Kau E. Johann |
| author_facet | M. Hembera H.-P. Kau E. Johann |
| author_sort | M. Hembera |
| collection | DOAJ |
| description | This article presents the study of casing treatments on an axial compressor stage for improving stability and enhancing stall margin. So far, many simulations of casing treatments on single rotor or rotor-stator configurations were performed. But as the application of casing treatments in engines will be in a multistage compressor, in this study, the axial slots are applied to a typical transonic first stage of a high-pressure 4.5-stage compressor including an upstream IGV, rotor, and stator. The unsteady simulations are performed with a three-dimensional time accurate Favre-averaged Navier-stokes flow solver. In order to resolve all important flow mechanisms appearing through the use of casing treatments, a computational multiblock grid consisting of approximately 2.4 million nodes was used for the simulations. The configurations include axial slots in 4 different variations with an axial extension ranging into the blade passage of the IGV. Their shape is semicircular with no inclination in circumferential direction. The simulations proved the effectiveness of casing treatments with an upstream stator. However, the results also showed that the slots have to be carefully positioned relative to the stator location. |
| format | Article |
| id | doaj-art-5ab85cc2d40d44fb839d79be680c8ae8 |
| institution | Kabale University |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2008-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-5ab85cc2d40d44fb839d79be680c8ae82025-02-03T06:13:53ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342008-01-01200810.1155/2008/657202657202Simulation of Casing Treatments of a Transonic Compressor StageM. Hembera0H.-P. Kau1E. Johann2Institute for Flight Propulsion, Technische Universität München, Boltzmannstraße 15, 85747 Garching, GermanyInstitute for Flight Propulsion, Technische Universität München, Boltzmannstraße 15, 85747 Garching, GermanyCompressor Aerodynamics, Rolls-Royce Deutschland, Eschenweg 11, 15827 Dahlewitz Berlin, GermanyThis article presents the study of casing treatments on an axial compressor stage for improving stability and enhancing stall margin. So far, many simulations of casing treatments on single rotor or rotor-stator configurations were performed. But as the application of casing treatments in engines will be in a multistage compressor, in this study, the axial slots are applied to a typical transonic first stage of a high-pressure 4.5-stage compressor including an upstream IGV, rotor, and stator. The unsteady simulations are performed with a three-dimensional time accurate Favre-averaged Navier-stokes flow solver. In order to resolve all important flow mechanisms appearing through the use of casing treatments, a computational multiblock grid consisting of approximately 2.4 million nodes was used for the simulations. The configurations include axial slots in 4 different variations with an axial extension ranging into the blade passage of the IGV. Their shape is semicircular with no inclination in circumferential direction. The simulations proved the effectiveness of casing treatments with an upstream stator. However, the results also showed that the slots have to be carefully positioned relative to the stator location.http://dx.doi.org/10.1155/2008/657202 |
| spellingShingle | M. Hembera H.-P. Kau E. Johann Simulation of Casing Treatments of a Transonic Compressor Stage International Journal of Rotating Machinery |
| title | Simulation of Casing Treatments of a Transonic Compressor Stage |
| title_full | Simulation of Casing Treatments of a Transonic Compressor Stage |
| title_fullStr | Simulation of Casing Treatments of a Transonic Compressor Stage |
| title_full_unstemmed | Simulation of Casing Treatments of a Transonic Compressor Stage |
| title_short | Simulation of Casing Treatments of a Transonic Compressor Stage |
| title_sort | simulation of casing treatments of a transonic compressor stage |
| url | http://dx.doi.org/10.1155/2008/657202 |
| work_keys_str_mv | AT mhembera simulationofcasingtreatmentsofatransoniccompressorstage AT hpkau simulationofcasingtreatmentsofatransoniccompressorstage AT ejohann simulationofcasingtreatmentsofatransoniccompressorstage |