A Comparative Study of Film Cooling with Combined Impingement and Film Cooling
In order to cool the gas turbine vane or blade and raise the operating temperature, two standard convective cooling methods are used: jet impingement cooling and film cooling. The current study uses computational analysis to analyze and compare film cooling effectiveness with and without multi-jet i...
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2023-05-01
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| Series: | Journal of Applied Fluid Mechanics |
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| Online Access: | https://www.jafmonline.net/article_2230_4abe679a6f4b192edfea00b85be3133b.pdf |
| _version_ | 1797831615943016448 |
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| author | R. K. Panda A. K. Pujari B. Gudla |
| author_facet | R. K. Panda A. K. Pujari B. Gudla |
| author_sort | R. K. Panda |
| collection | DOAJ |
| description | In order to cool the gas turbine vane or blade and raise the operating temperature, two standard convective cooling methods are used: jet impingement cooling and film cooling. The current study uses computational analysis to analyze and compare film cooling effectiveness with and without multi-jet impingement cooling on a flat plate. Ansys Fluent software is used to perform computational analysis on a flat plate. The computational results were compared with the experimental result using K-ω SST turbulence model and validated with literature data. The flat plate is used for the conjugate heat transfer study on the hot surface (named interaction surface), cold surface (called target surface), and inside the film hole. Different heat transfer parameters such as heat flux, Nusselt's number, and effectiveness are compared for the two cases, i.e., film cooling with impinging jets (IFC) and film cooling without impingement cooling (FC). It is observed that the FC case shows lower effectiveness as compared to the IFC case. The average Nusselt number for the IFC cases is almost three times larger than FC. The film exit temperature values are higher FC case, but it is more uniform in the IFC case. Interaction surface heat flux and Nusselt number values show higher values on the upstream wall of the film hole for IFC than in the FC case. |
| first_indexed | 2024-04-09T13:54:32Z |
| format | Article |
| id | doaj.art-634619c430ff4160aefd6e99da70cd6a |
| institution | Directory Open Access Journal |
| issn | 1735-3572 1735-3645 |
| language | English |
| last_indexed | 2024-04-09T13:54:32Z |
| publishDate | 2023-05-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj.art-634619c430ff4160aefd6e99da70cd6a2023-05-08T07:56:18ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35721735-36452023-05-011671386140110.47176/jafm.16.07.16692230A Comparative Study of Film Cooling with Combined Impingement and Film CoolingR. K. Panda0A. K. Pujari1B. Gudla2Indian Institute of Technology, Madras, Chennai, Tamilnadu,600036, IndiaIndian Institute of Petroleum and Energy, Visakhapatnam, 530003, IndiaIndian Institute of Petroleum and Energy, Visakhapatnam, 530003, IndiaIn order to cool the gas turbine vane or blade and raise the operating temperature, two standard convective cooling methods are used: jet impingement cooling and film cooling. The current study uses computational analysis to analyze and compare film cooling effectiveness with and without multi-jet impingement cooling on a flat plate. Ansys Fluent software is used to perform computational analysis on a flat plate. The computational results were compared with the experimental result using K-ω SST turbulence model and validated with literature data. The flat plate is used for the conjugate heat transfer study on the hot surface (named interaction surface), cold surface (called target surface), and inside the film hole. Different heat transfer parameters such as heat flux, Nusselt's number, and effectiveness are compared for the two cases, i.e., film cooling with impinging jets (IFC) and film cooling without impingement cooling (FC). It is observed that the FC case shows lower effectiveness as compared to the IFC case. The average Nusselt number for the IFC cases is almost three times larger than FC. The film exit temperature values are higher FC case, but it is more uniform in the IFC case. Interaction surface heat flux and Nusselt number values show higher values on the upstream wall of the film hole for IFC than in the FC case.https://www.jafmonline.net/article_2230_4abe679a6f4b192edfea00b85be3133b.pdfjet impingement coolingfilm coolingcombined impingement film coolingturbulent kinetic energynusselt's number |
| spellingShingle | R. K. Panda A. K. Pujari B. Gudla A Comparative Study of Film Cooling with Combined Impingement and Film Cooling Journal of Applied Fluid Mechanics jet impingement cooling film cooling combined impingement film cooling turbulent kinetic energy nusselt's number |
| title | A Comparative Study of Film Cooling with Combined Impingement and Film Cooling |
| title_full | A Comparative Study of Film Cooling with Combined Impingement and Film Cooling |
| title_fullStr | A Comparative Study of Film Cooling with Combined Impingement and Film Cooling |
| title_full_unstemmed | A Comparative Study of Film Cooling with Combined Impingement and Film Cooling |
| title_short | A Comparative Study of Film Cooling with Combined Impingement and Film Cooling |
| title_sort | comparative study of film cooling with combined impingement and film cooling |
| topic | jet impingement cooling film cooling combined impingement film cooling turbulent kinetic energy nusselt's number |
| url | https://www.jafmonline.net/article_2230_4abe679a6f4b192edfea00b85be3133b.pdf |
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