Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane
Based on numerical simulations, the heat transfer and flow field of a turbine vane are analyzed and the film cooling is improved. The optimization objective is increasing the overall cooling effectiveness with cascade pressure loss factors staying almost unchanged. Thus, cylindrical film holes were...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2022-12-01
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| Series: | Engineering Applications of Computational Fluid Mechanics |
| Subjects: | |
| Online Access: | https://www.tandfonline.com/doi/10.1080/19942060.2021.2019127 |
| _version_ | 1819174580739112960 |
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| author | Mingrui Wang Huiren Zhu Cunliang Liu Tao Guo Li Zhang Na Li |
| author_facet | Mingrui Wang Huiren Zhu Cunliang Liu Tao Guo Li Zhang Na Li |
| author_sort | Mingrui Wang |
| collection | DOAJ |
| description | Based on numerical simulations, the heat transfer and flow field of a turbine vane are analyzed and the film cooling is improved. The optimization objective is increasing the overall cooling effectiveness with cascade pressure loss factors staying almost unchanged. Thus, cylindrical film holes were replaced by laidback holes and V-crater holes. To analyze the effect of structural adjustment on the vane, pressure distributions, mass flow distributions, and heat transfer coefficients were investigated for internal and external cooling systems. To explain the advantages of shaped holes over cylindrical holes, the flow mechanisms, film superposition, discharge coefficients, blow ratios, and film cooling effectiveness were compared. Meanwhile, the influence of mass flow ratios and mainstream Reynolds numbers was analyzed. After optimization, at the design condition, the overall cooling effectiveness increased by 4.19% on the pressure surface and 1.78% on the suction surface. However, the cascade pressure loss factor increased by 0.26% only. |
| first_indexed | 2024-12-22T20:41:14Z |
| format | Article |
| id | doaj.art-ca1d01d4648a46f797dc1a5a3069d0a0 |
| institution | Directory Open Access Journal |
| issn | 1994-2060 1997-003X |
| language | English |
| last_indexed | 2024-12-22T20:41:14Z |
| publishDate | 2022-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Engineering Applications of Computational Fluid Mechanics |
| spelling | doaj.art-ca1d01d4648a46f797dc1a5a3069d0a02022-12-21T18:13:20ZengTaylor & Francis GroupEngineering Applications of Computational Fluid Mechanics1994-20601997-003X2022-12-0116190493610.1080/19942060.2021.2019127Numerical analysis and design optimization on full coverage film-cooling for turbine guided vaneMingrui Wang0Huiren Zhu1Cunliang Liu2Tao Guo3Li Zhang4Na Li5School of Power and Energy, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaSchool of Power and Energy, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaSchool of Power and Energy, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaSchool of Power and Energy, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaSchool of Power and Energy, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaSchool of Power and Energy, Northwestern Polytechnical University, Xi’an, People’s Republic of ChinaBased on numerical simulations, the heat transfer and flow field of a turbine vane are analyzed and the film cooling is improved. The optimization objective is increasing the overall cooling effectiveness with cascade pressure loss factors staying almost unchanged. Thus, cylindrical film holes were replaced by laidback holes and V-crater holes. To analyze the effect of structural adjustment on the vane, pressure distributions, mass flow distributions, and heat transfer coefficients were investigated for internal and external cooling systems. To explain the advantages of shaped holes over cylindrical holes, the flow mechanisms, film superposition, discharge coefficients, blow ratios, and film cooling effectiveness were compared. Meanwhile, the influence of mass flow ratios and mainstream Reynolds numbers was analyzed. After optimization, at the design condition, the overall cooling effectiveness increased by 4.19% on the pressure surface and 1.78% on the suction surface. However, the cascade pressure loss factor increased by 0.26% only.https://www.tandfonline.com/doi/10.1080/19942060.2021.2019127Conjugate heat transferturbine vanefilm coolingV-crater holelaidback holedischarge coefficient |
| spellingShingle | Mingrui Wang Huiren Zhu Cunliang Liu Tao Guo Li Zhang Na Li Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane Engineering Applications of Computational Fluid Mechanics Conjugate heat transfer turbine vane film cooling V-crater hole laidback hole discharge coefficient |
| title | Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane |
| title_full | Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane |
| title_fullStr | Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane |
| title_full_unstemmed | Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane |
| title_short | Numerical analysis and design optimization on full coverage film-cooling for turbine guided vane |
| title_sort | numerical analysis and design optimization on full coverage film cooling for turbine guided vane |
| topic | Conjugate heat transfer turbine vane film cooling V-crater hole laidback hole discharge coefficient |
| url | https://www.tandfonline.com/doi/10.1080/19942060.2021.2019127 |
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