Numerical study of the ejection cooling mechanism of ventilation for a marine gas turbine enclosure

• Autorzy: Shi Hong , Zhang Qianwei , Liu Meinan , Yang Kaijie , Yuan Jie

Identyfikatory

DOI

10.2478/pomr-2022-0032

• Języki publikacji: EN

Abstrakty

EN

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.

Słowa kluczowe

EN

gas turbine enclosure; ejecting cooling; ventilation; CFD

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2022
• Tom: nr 3
• Strony: 119--127
• Opis fizyczny: Bibliogr. 25 poz., rys., tab.

Twórcy

autor

Shi Hong

• Jiangsu University of Science and Technology; College of Energy & Power Engineering; Zhenjiang, China

autor

Zhang Qianwei

• Jiangsu University of Science and Technology; College of Energy & Power Engineering; Zhenjiang, China

autor

Liu Meinan

• Jiangsu University of Science and Technology; College of Energy & Power Engineering; Zhenjiang, China

autor

Yang Kaijie

• Nanjing University of Aeronautics & Astronautics; Key Laboratory of Aircraft environment control and life support, MIIT; Nanjing, China

autor

Yuan Jie

• Nanjing University of Aeronautics & Astronautics; Key Laboratory of Aircraft environment control and life support, MIIT; Nanjing, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).