Optimization sealing and cooling to control gas intrusion in a floating-wall combustion chamber

• Autorzy: Shi Hong , Wang Rui , Chen Mingmin , Wang Jiao , Yuan Jie , Zhang Qianwei , Yang Kaijie

Identyfikatory

DOI

10.24425/bpasts.2024.148836

• Języki publikacji: EN

Abstrakty

EN

In response to the problems of high-temperature gas intrusion and ablation in the expansion slit between ceramic tiles under complex flow conditions in the floating-wall combustion chamber, as well as the issue of hooks exceeding their service temperature, numerical simulations and analysis were conducted for this paper. The study revealed the mechanisms of gas intrusion and sealing and proposed two evaluation metrics for evaluating the cooling effect: the maximum temperature of the hook and the proportion of high-temperature area on the sidewall of the tile. Furthermore, the CRITIC weighting method was used to analyze the weight of these metrics. Based on this, the spacing, radius, and length effects on sealing and cooling effectiveness were studied, and multi-parameter calculations and optimization were performed. The results showed that the degree of gas intrusion in the transverse slit was significantly higher than that in the longitudinal slit. In addition, the sealing method of the jet impingement could effectively cool the downstream of both the transverse and longitudinal slit. The spacing of the jet impingement holes had the greatest impact on the cooling effect, followed by the radius and length. Finally, when the spacing of the holes is 10 mm, the length is 18.125 mm, and the radius is 1.6 mm, the cooling effect is optimal, with the proportion of high-temperature area on the side wall of the tile being 20.86% and the highest temperature of the hook reaching 836.02 K.

Słowa kluczowe

EN

gas turbine; floating-wall combustion chamber; gas intrusion; jet impingement cooling; CRITIC weighting

PL

turbina gazowa; komora spalania o pływających ściankach; wtargnięcie gazu; chłodzenie strumieniowe; waga CRITIC

• Wydawca: Polska Akademia Nauk, Wydział IV Nauk Technicznych
• Czasopismo: Bulletin of the Polish Academy of Sciences. Technical Sciences
• Rocznik: 2024
• Tom: Vol. 72, nr 2
• Strony: art. no. e148834
• Opis fizyczny: Bibliogr 22 poz., rys., tab.

Twórcy

autor

Shi Hong

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

• https://orcid.org/0000-0002-3694-7496

autor

Wang Rui

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

• https://orcid.org/0000-0003-2609-4255

autor

Chen Mingmin

• College of Power and Energy Engineering, Harbin Engineering University, China

autor

Wang Jiao

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

autor

Yuan Jie

• College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, China

autor

Zhang Qianwei

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

autor

Yang Kaijie

• College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, 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).