Flat Plate and Turbine Vane Film-Cooling Performance with Laid-Back Fan-Shaped Holes
Shaped holes are considered as an effective solution to enhance gas turbine film-cooling performance, as they allow to increase the coolant mass-flux, while limiting the detrimental lift-off phenomena. A great amount of work has been carried out in past years on basic flat plate configurations while...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-06-01
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| Series: | International Journal of Turbomachinery, Propulsion and Power |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-186X/4/2/14 |
| _version_ | 1819212957850009600 |
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| author | Tommaso Bacci Alessio Picchi Bruno Facchini |
| author_facet | Tommaso Bacci Alessio Picchi Bruno Facchini |
| author_sort | Tommaso Bacci |
| collection | DOAJ |
| description | Shaped holes are considered as an effective solution to enhance gas turbine film-cooling performance, as they allow to increase the coolant mass-flux, while limiting the detrimental lift-off phenomena. A great amount of work has been carried out in past years on basic flat plate configurations while a reduced number of experimental works deals with a quantitative assessment of the influence of curvature and vane pressure gradient. In the present work PSP (Pressure Sensitive Paint) technique is used to detail the adiabatic effectiveness generated by axial shaped holes with high value of Area Ratio close to 7, in three different configurations with the same 1:1 scale: first of all, a flat plate configuration is examined; after that, the film-cooled pressure and suction sides of a turbine vane model are investigated. Tests were performed varying the blowing ratio and imposing a density ratio of <inline-formula> <math display="inline"> <semantics> <mrow> <mn>2.5</mn> </mrow> </semantics> </math> </inline-formula>. The experimental results are finally compared to the predictions of two different correlations, developed for flat plate configurations. |
| first_indexed | 2024-12-23T06:51:13Z |
| format | Article |
| id | doaj.art-2f9351a1d7b448cfa98a939788a9a318 |
| institution | Directory Open Access Journal |
| issn | 2504-186X |
| language | English |
| last_indexed | 2024-12-23T06:51:13Z |
| publishDate | 2019-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | International Journal of Turbomachinery, Propulsion and Power |
| spelling | doaj.art-2f9351a1d7b448cfa98a939788a9a3182022-12-21T17:56:25ZengMDPI AGInternational Journal of Turbomachinery, Propulsion and Power2504-186X2019-06-01421410.3390/ijtpp4020014ijtpp4020014Flat Plate and Turbine Vane Film-Cooling Performance with Laid-Back Fan-Shaped HolesTommaso Bacci0Alessio Picchi1Bruno Facchini2DIEF Department of Industrial Engineering, University of Florence, Via S. Marta 3, 50139 Florence, ItalyDIEF Department of Industrial Engineering, University of Florence, Via S. Marta 3, 50139 Florence, ItalyDIEF Department of Industrial Engineering, University of Florence, Via S. Marta 3, 50139 Florence, ItalyShaped holes are considered as an effective solution to enhance gas turbine film-cooling performance, as they allow to increase the coolant mass-flux, while limiting the detrimental lift-off phenomena. A great amount of work has been carried out in past years on basic flat plate configurations while a reduced number of experimental works deals with a quantitative assessment of the influence of curvature and vane pressure gradient. In the present work PSP (Pressure Sensitive Paint) technique is used to detail the adiabatic effectiveness generated by axial shaped holes with high value of Area Ratio close to 7, in three different configurations with the same 1:1 scale: first of all, a flat plate configuration is examined; after that, the film-cooled pressure and suction sides of a turbine vane model are investigated. Tests were performed varying the blowing ratio and imposing a density ratio of <inline-formula> <math display="inline"> <semantics> <mrow> <mn>2.5</mn> </mrow> </semantics> </math> </inline-formula>. The experimental results are finally compared to the predictions of two different correlations, developed for flat plate configurations.https://www.mdpi.com/2504-186X/4/2/14film-coolingshaped holesturbine vaneflat platePSP |
| spellingShingle | Tommaso Bacci Alessio Picchi Bruno Facchini Flat Plate and Turbine Vane Film-Cooling Performance with Laid-Back Fan-Shaped Holes International Journal of Turbomachinery, Propulsion and Power film-cooling shaped holes turbine vane flat plate PSP |
| title | Flat Plate and Turbine Vane Film-Cooling Performance with Laid-Back Fan-Shaped Holes |
| title_full | Flat Plate and Turbine Vane Film-Cooling Performance with Laid-Back Fan-Shaped Holes |
| title_fullStr | Flat Plate and Turbine Vane Film-Cooling Performance with Laid-Back Fan-Shaped Holes |
| title_full_unstemmed | Flat Plate and Turbine Vane Film-Cooling Performance with Laid-Back Fan-Shaped Holes |
| title_short | Flat Plate and Turbine Vane Film-Cooling Performance with Laid-Back Fan-Shaped Holes |
| title_sort | flat plate and turbine vane film cooling performance with laid back fan shaped holes |
| topic | film-cooling shaped holes turbine vane flat plate PSP |
| url | https://www.mdpi.com/2504-186X/4/2/14 |
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