Influence of surface roughness of thermal barrier coating on the cooling performance of a film-cooled turbine vane
To explore the impact of thermal barrier coating (TBC) surface roughness on the cooling effectiveness of film-cooled turbine vanes, the GE-E3 high pressure turbine vane was used. Utilizing the method of conjugate heat transfer (CHT) and Computational Fluid Dynamics (CFD), we employed the SST k-ω two...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24017295 |
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| _version_ | 1841555698495782912 |
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| author | Xiaoyu Song Feng Liu Yan Yan Wen Wang Yaning Wang Wei Sun Jiahuan Cui |
| author_facet | Xiaoyu Song Feng Liu Yan Yan Wen Wang Yaning Wang Wei Sun Jiahuan Cui |
| author_sort | Xiaoyu Song |
| collection | DOAJ |
| description | To explore the impact of thermal barrier coating (TBC) surface roughness on the cooling effectiveness of film-cooled turbine vanes, the GE-E3 high pressure turbine vane was used. Utilizing the method of conjugate heat transfer (CHT) and Computational Fluid Dynamics (CFD), we employed the SST k-ω two-equation turbulence model to conduct numerical simulations of the film cooling process. Our analysis delves into the effects of varying roughness levels (0 μm, 0.81 μm, 2 μm and 3 μm) on vane cooling efficiency, TBC performance, and vane heat transfer coefficient. Results indicate a notable enhancement in vane film cooling efficiency, particularly in proximity to the leading edge (LE), owing to the presence of TBC. As TBC surface roughness increases, heat transfer coefficients on the suction side (SS) and pressure side (PS) near the trailing edge (TE) generally rise, diminishing both cooling and TBC effectiveness. However, divergent outcomes emerge near the LE due to the inherent uncertainty in heat transfer predictions. Notably, reducing TBC surface roughness from 3 μm to 0 μm yields an average cooling efficiency increase of 2.45 %, with a maximum improvement of 2.1 %. |
| format | Article |
| id | doaj-art-b0266e88601241efb81395121375673d |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-b0266e88601241efb81395121375673d2025-01-08T04:52:55ZengElsevierCase Studies in Thermal Engineering2214-157X2025-01-0165105698Influence of surface roughness of thermal barrier coating on the cooling performance of a film-cooled turbine vaneXiaoyu Song0Feng Liu1Yan Yan2Wen Wang3Yaning Wang4Wei Sun5Jiahuan Cui6College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan, 030024, ChinaCollege of Mechanical Engineering, Taiyuan University of Technology, Taiyuan, 030024, China; Corresponding author. Taiyuan University of Technology, Taiyuan, 030024, China.School of Advanced Technology, Xi'an Jiaotong-Liverpool University, Suzhou, 215123, ChinaCollege of Aircraft Engineering, Nanchang Hangkong University, Nanchang 330063, ChinaZJU-UIUC Institute, Zhejiang University, Haining, 314400, China; School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310007, ChinaChina Academy of Aerospace Science and Innovation, Beijing, 100088, ChinaZJU-UIUC Institute, Zhejiang University, Haining, 314400, China; School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310007, ChinaTo explore the impact of thermal barrier coating (TBC) surface roughness on the cooling effectiveness of film-cooled turbine vanes, the GE-E3 high pressure turbine vane was used. Utilizing the method of conjugate heat transfer (CHT) and Computational Fluid Dynamics (CFD), we employed the SST k-ω two-equation turbulence model to conduct numerical simulations of the film cooling process. Our analysis delves into the effects of varying roughness levels (0 μm, 0.81 μm, 2 μm and 3 μm) on vane cooling efficiency, TBC performance, and vane heat transfer coefficient. Results indicate a notable enhancement in vane film cooling efficiency, particularly in proximity to the leading edge (LE), owing to the presence of TBC. As TBC surface roughness increases, heat transfer coefficients on the suction side (SS) and pressure side (PS) near the trailing edge (TE) generally rise, diminishing both cooling and TBC effectiveness. However, divergent outcomes emerge near the LE due to the inherent uncertainty in heat transfer predictions. Notably, reducing TBC surface roughness from 3 μm to 0 μm yields an average cooling efficiency increase of 2.45 %, with a maximum improvement of 2.1 %.http://www.sciencedirect.com/science/article/pii/S2214157X24017295RoughnessFilm coolingThermal barrier coatingConjugate heat transferHeat transfer coefficient |
| spellingShingle | Xiaoyu Song Feng Liu Yan Yan Wen Wang Yaning Wang Wei Sun Jiahuan Cui Influence of surface roughness of thermal barrier coating on the cooling performance of a film-cooled turbine vane Case Studies in Thermal Engineering Roughness Film cooling Thermal barrier coating Conjugate heat transfer Heat transfer coefficient |
| title | Influence of surface roughness of thermal barrier coating on the cooling performance of a film-cooled turbine vane |
| title_full | Influence of surface roughness of thermal barrier coating on the cooling performance of a film-cooled turbine vane |
| title_fullStr | Influence of surface roughness of thermal barrier coating on the cooling performance of a film-cooled turbine vane |
| title_full_unstemmed | Influence of surface roughness of thermal barrier coating on the cooling performance of a film-cooled turbine vane |
| title_short | Influence of surface roughness of thermal barrier coating on the cooling performance of a film-cooled turbine vane |
| title_sort | influence of surface roughness of thermal barrier coating on the cooling performance of a film cooled turbine vane |
| topic | Roughness Film cooling Thermal barrier coating Conjugate heat transfer Heat transfer coefficient |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24017295 |
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