Influence of Swirl Clocking on the Performance of Turbine Stage with Three-Dimensional Nozzle Guide Vane
The effect of the swirl clocking on three-dimensional nozzle guide vane (NGV) is investigated using computational fluid dynamics. The research reports the loss characteristics of leaned and swept NGVs and the influence of swirl clocking. The three-dimensional NGVs are built by stacking the same 2D p...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/17/5503 |
| _version_ | 1797521473130201088 |
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| author | Shinyoung Jeon Changmin Son Jinuk Kim |
| author_facet | Shinyoung Jeon Changmin Son Jinuk Kim |
| author_sort | Shinyoung Jeon |
| collection | DOAJ |
| description | The effect of the swirl clocking on three-dimensional nozzle guide vane (NGV) is investigated using computational fluid dynamics. The research reports the loss characteristics of leaned and swept NGVs and the influence of swirl clocking. The three-dimensional NGVs are built by stacking the same 2D profile along different linear axes, characterized by different angles with respect to the normal or radial direction: ε = −12° ~ +12° for the leaned and γ = −5° ~ +10° for the swept airfoils. A total of 40 models are analyzed to study the effects of lean and sweep on aerodynamic performance. To investigate the influence of swirl clocking, the analysis cases include the center of the swirl that was positioned at the leading edge as well as the middle of the passage. The prediction results show that the relationship of the changes in mass flow rate and throat area are not monotonic. Further observation confirms the redistribution of loading and flow angle under different lean and sweep angles; thus, three-dimensional design is a key influencing factor on aerodynamic performance. In the presence of swirl clocking, NGV performance is changed significantly and the findings offer new insight and opportunities to improve three-dimensional NGV airfoil design. |
| first_indexed | 2024-03-10T08:12:04Z |
| format | Article |
| id | doaj.art-cb804f2276e94b138cb13aaab9568796 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T08:12:04Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-cb804f2276e94b138cb13aaab95687962023-11-22T10:35:39ZengMDPI AGEnergies1996-10732021-09-011417550310.3390/en14175503Influence of Swirl Clocking on the Performance of Turbine Stage with Three-Dimensional Nozzle Guide VaneShinyoung Jeon0Changmin Son1Jinuk Kim2School of Mechanical Engineering, Pusan National University, Pusan 46241, KoreaDepartment of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USAGas Turbine Center, Doosan Heavy Industries & Construction, Changwon 51711, KoreaThe effect of the swirl clocking on three-dimensional nozzle guide vane (NGV) is investigated using computational fluid dynamics. The research reports the loss characteristics of leaned and swept NGVs and the influence of swirl clocking. The three-dimensional NGVs are built by stacking the same 2D profile along different linear axes, characterized by different angles with respect to the normal or radial direction: ε = −12° ~ +12° for the leaned and γ = −5° ~ +10° for the swept airfoils. A total of 40 models are analyzed to study the effects of lean and sweep on aerodynamic performance. To investigate the influence of swirl clocking, the analysis cases include the center of the swirl that was positioned at the leading edge as well as the middle of the passage. The prediction results show that the relationship of the changes in mass flow rate and throat area are not monotonic. Further observation confirms the redistribution of loading and flow angle under different lean and sweep angles; thus, three-dimensional design is a key influencing factor on aerodynamic performance. In the presence of swirl clocking, NGV performance is changed significantly and the findings offer new insight and opportunities to improve three-dimensional NGV airfoil design.https://www.mdpi.com/1996-1073/14/17/5503total pressure lossstage efficiencylean anglesweep angle |
| spellingShingle | Shinyoung Jeon Changmin Son Jinuk Kim Influence of Swirl Clocking on the Performance of Turbine Stage with Three-Dimensional Nozzle Guide Vane Energies total pressure loss stage efficiency lean angle sweep angle |
| title | Influence of Swirl Clocking on the Performance of Turbine Stage with Three-Dimensional Nozzle Guide Vane |
| title_full | Influence of Swirl Clocking on the Performance of Turbine Stage with Three-Dimensional Nozzle Guide Vane |
| title_fullStr | Influence of Swirl Clocking on the Performance of Turbine Stage with Three-Dimensional Nozzle Guide Vane |
| title_full_unstemmed | Influence of Swirl Clocking on the Performance of Turbine Stage with Three-Dimensional Nozzle Guide Vane |
| title_short | Influence of Swirl Clocking on the Performance of Turbine Stage with Three-Dimensional Nozzle Guide Vane |
| title_sort | influence of swirl clocking on the performance of turbine stage with three dimensional nozzle guide vane |
| topic | total pressure loss stage efficiency lean angle sweep angle |
| url | https://www.mdpi.com/1996-1073/14/17/5503 |
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