Numerical Study of the Ejection Cooling Mechanism of Ventilation for a Marine Gas Turbine Enclosure
A marine gas turbine enclosure must be designed to prevent overheating of the electrical and engine control components as well as diluting potential fuel leaks. In order to achieve an optimal enclosure design, a numerical study of the ventilation-ejection cooling mechanism of a gas turbine enclosure...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Sciendo
2022-09-01
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| Series: | Polish Maritime Research |
| Subjects: | |
| Online Access: | https://doi.org/10.2478/pomr-2022-0032 |
| _version_ | 1797987782154518528 |
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| author | Shi Hong Zhang Qianwei Liu Meinan Yang Kaijie Yuan Jie |
| author_facet | Shi Hong Zhang Qianwei Liu Meinan Yang Kaijie Yuan Jie |
| author_sort | Shi Hong |
| collection | DOAJ |
| description | A marine gas turbine enclosure must be designed to prevent overheating of the electrical and engine control components as well as diluting potential fuel leaks. In order to achieve an optimal enclosure design, a numerical study of the ventilation-ejection cooling mechanism of a gas turbine enclosure is carried out in this paper. The evaluation index of the ejection cooling performance is first proposed and the algorithm of numerical simulation is verified. On this basis, orthogonal combinations of structural parameters are carried out for the expansion angle α of the lobed nozzle and the spacing S between the outlet plane of the lobed nozzle and the inlet plane of the mixing tube. The flow and the temperature distribution inside the enclosure are analysed under different operating conditions. The results show that the influence of the lobed nozzle expansion angle α and the spacing S on the performance is not a single-valued function but the two influencing factors are mutually constrained and influenced by each other. For any spacing, the combined coefficient is optimal for the expansion angle α = 30°. When the expansion angle α = 45° and the spacing S = 100 mm, the combined coefficient and the temperature distribution inside the enclosure are optimal at the same time. |
| first_indexed | 2024-04-11T07:53:34Z |
| format | Article |
| id | doaj.art-43586bf29e4840aaba23b6d8b26ef2d6 |
| institution | Directory Open Access Journal |
| issn | 2083-7429 |
| language | English |
| last_indexed | 2024-04-11T07:53:34Z |
| publishDate | 2022-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Maritime Research |
| spelling | doaj.art-43586bf29e4840aaba23b6d8b26ef2d62022-12-22T04:36:00ZengSciendoPolish Maritime Research2083-74292022-09-0129311912710.2478/pomr-2022-0032Numerical Study of the Ejection Cooling Mechanism of Ventilation for a Marine Gas Turbine EnclosureShi Hong0Zhang Qianwei1Liu Meinan2Yang Kaijie3Yuan Jie4Jiangsu University of Science and Technology; ChinaJiangsu University of Science and Technology; ChinaJiangsu University of Science and Technology; ChinaNanjing University of Aeronautics & Astronautics; ChinaNanjing University of Aeronautics & Astronautics; ChinaA marine gas turbine enclosure must be designed to prevent overheating of the electrical and engine control components as well as diluting potential fuel leaks. In order to achieve an optimal enclosure design, a numerical study of the ventilation-ejection cooling mechanism of a gas turbine enclosure is carried out in this paper. The evaluation index of the ejection cooling performance is first proposed and the algorithm of numerical simulation is verified. On this basis, orthogonal combinations of structural parameters are carried out for the expansion angle α of the lobed nozzle and the spacing S between the outlet plane of the lobed nozzle and the inlet plane of the mixing tube. The flow and the temperature distribution inside the enclosure are analysed under different operating conditions. The results show that the influence of the lobed nozzle expansion angle α and the spacing S on the performance is not a single-valued function but the two influencing factors are mutually constrained and influenced by each other. For any spacing, the combined coefficient is optimal for the expansion angle α = 30°. When the expansion angle α = 45° and the spacing S = 100 mm, the combined coefficient and the temperature distribution inside the enclosure are optimal at the same time.https://doi.org/10.2478/pomr-2022-0032gas turbine enclosureejecting coolingventilationcfd |
| spellingShingle | Shi Hong Zhang Qianwei Liu Meinan Yang Kaijie Yuan Jie Numerical Study of the Ejection Cooling Mechanism of Ventilation for a Marine Gas Turbine Enclosure Polish Maritime Research gas turbine enclosure ejecting cooling ventilation cfd |
| title | Numerical Study of the Ejection Cooling Mechanism of Ventilation for a Marine Gas Turbine Enclosure |
| title_full | Numerical Study of the Ejection Cooling Mechanism of Ventilation for a Marine Gas Turbine Enclosure |
| title_fullStr | Numerical Study of the Ejection Cooling Mechanism of Ventilation for a Marine Gas Turbine Enclosure |
| title_full_unstemmed | Numerical Study of the Ejection Cooling Mechanism of Ventilation for a Marine Gas Turbine Enclosure |
| title_short | Numerical Study of the Ejection Cooling Mechanism of Ventilation for a Marine Gas Turbine Enclosure |
| title_sort | numerical study of the ejection cooling mechanism of ventilation for a marine gas turbine enclosure |
| topic | gas turbine enclosure ejecting cooling ventilation cfd |
| url | https://doi.org/10.2478/pomr-2022-0032 |
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