Analysis of sweeping jet and film composite cooling using the decoupled model
The heat transfer process of the sweeping jet and film composite cooling (SJF) structure of the turbine blade leading edge is complex. The current work divides the overall cooling effectiveness of the SJF into the impingement heat transfer effectiveness, the convection heat transfer effectiveness in...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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De Gruyter
2023-03-01
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| Series: | Open Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/phys-2022-0238 |
| _version_ | 1797848669332963328 |
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| author | Kong Xiangcan Zhang Yanfeng Li Guoqing Lu Xingen Zeng Jun Zhu Junqiang Xu Jinliang |
| author_facet | Kong Xiangcan Zhang Yanfeng Li Guoqing Lu Xingen Zeng Jun Zhu Junqiang Xu Jinliang |
| author_sort | Kong Xiangcan |
| collection | DOAJ |
| description | The heat transfer process of the sweeping jet and film composite cooling (SJF) structure of the turbine blade leading edge is complex. The current work divides the overall cooling effectiveness of the SJF into the impingement heat transfer effectiveness, the convection heat transfer effectiveness inside the film holes, and the external film cooling effectiveness by the decoupled method. Various cooling effectiveness proportions and trends are compared when the blowing ratios are 1.05, 2.07, and 4.11. There is an average ratio of 64.33% for impingement heat transfer effectiveness and 38.02% for convection heat transfer effectiveness. The ratio of external film cooling effectiveness gradually changes from positive to negative with the increase of the blowing ratio. Therefore, the proportion of external film cooling effectiveness and impingement heat transfer effectiveness should be considered when applying SJF. The convection heat transfer effectiveness cannot be ignored, especially when the design scheme of the shower head is used. |
| first_indexed | 2024-04-09T18:31:17Z |
| format | Article |
| id | doaj.art-cba7130caf944b24ab4a333f2470f6ea |
| institution | Directory Open Access Journal |
| issn | 2391-5471 |
| language | English |
| last_indexed | 2024-04-09T18:31:17Z |
| publishDate | 2023-03-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Open Physics |
| spelling | doaj.art-cba7130caf944b24ab4a333f2470f6ea2023-04-11T17:07:19ZengDe GruyterOpen Physics2391-54712023-03-01211500910.1515/phys-2022-0238Analysis of sweeping jet and film composite cooling using the decoupled modelKong Xiangcan0Zhang Yanfeng1Li Guoqing2Lu Xingen3Zeng Jun4Zhu Junqiang5Xu Jinliang6School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing102206, ChinaSchool of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing102206, ChinaKey Laboratory of Light-duty Gas-turbine, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing100190, ChinaSchool of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing102206, ChinaAECC Sichuan Gas Turbine Establishment, Chengdu610500, ChinaSchool of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing102206, ChinaSchool of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing102206, ChinaThe heat transfer process of the sweeping jet and film composite cooling (SJF) structure of the turbine blade leading edge is complex. The current work divides the overall cooling effectiveness of the SJF into the impingement heat transfer effectiveness, the convection heat transfer effectiveness inside the film holes, and the external film cooling effectiveness by the decoupled method. Various cooling effectiveness proportions and trends are compared when the blowing ratios are 1.05, 2.07, and 4.11. There is an average ratio of 64.33% for impingement heat transfer effectiveness and 38.02% for convection heat transfer effectiveness. The ratio of external film cooling effectiveness gradually changes from positive to negative with the increase of the blowing ratio. Therefore, the proportion of external film cooling effectiveness and impingement heat transfer effectiveness should be considered when applying SJF. The convection heat transfer effectiveness cannot be ignored, especially when the design scheme of the shower head is used.https://doi.org/10.1515/phys-2022-0238conjugate heat transferdecoupled modelcomposite coolingsweeping jet cooling |
| spellingShingle | Kong Xiangcan Zhang Yanfeng Li Guoqing Lu Xingen Zeng Jun Zhu Junqiang Xu Jinliang Analysis of sweeping jet and film composite cooling using the decoupled model Open Physics conjugate heat transfer decoupled model composite cooling sweeping jet cooling |
| title | Analysis of sweeping jet and film composite cooling using the decoupled model |
| title_full | Analysis of sweeping jet and film composite cooling using the decoupled model |
| title_fullStr | Analysis of sweeping jet and film composite cooling using the decoupled model |
| title_full_unstemmed | Analysis of sweeping jet and film composite cooling using the decoupled model |
| title_short | Analysis of sweeping jet and film composite cooling using the decoupled model |
| title_sort | analysis of sweeping jet and film composite cooling using the decoupled model |
| topic | conjugate heat transfer decoupled model composite cooling sweeping jet cooling |
| url | https://doi.org/10.1515/phys-2022-0238 |
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