Optimization sealing and cooling to control gas intrusion in a floating-wall combustion chamber
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 con...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2023-12-01
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| Series: | Bulletin of the Polish Academy of Sciences: Technical Sciences |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/129620/PDF/BPASTS_2024_72_2_3821.pdf |
| _version_ | 1827314552920866816 |
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| author | Hong Shi Rui Wang Mingmin Chen Jiao Wang Jie Yuan Qianwei Zhang Kaijie Yang |
| author_facet | Hong Shi Rui Wang Mingmin Chen Jiao Wang Jie Yuan Qianwei Zhang Kaijie Yang |
| author_sort | Hong Shi |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-07T19:04:30Z |
| format | Article |
| id | doaj.art-931e4dc5823d463b833d90abc50b89e2 |
| institution | Directory Open Access Journal |
| issn | 2300-1917 |
| language | English |
| last_indexed | 2024-04-24T22:38:07Z |
| publishDate | 2023-12-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Bulletin of the Polish Academy of Sciences: Technical Sciences |
| spelling | doaj.art-931e4dc5823d463b833d90abc50b89e22024-03-19T07:47:34ZengPolish Academy of SciencesBulletin of the Polish Academy of Sciences: Technical Sciences2300-19172023-12-01722https://doi.org/10.24425/bpasts.2024.148836Optimization sealing and cooling to control gas intrusion in a floating-wall combustion chamberHong Shi0https://orcid.org/0000-0002-3694-7496Rui Wang1https://orcid.org/0000-0003-2609-4255Mingmin Chen2Jiao Wang3Jie Yuan4Qianwei Zhang5Kaijie Yang6College of Energy & Power Engineering, Jiangsu University of Science and Technology, ChinaCollege of Energy & Power Engineering, Jiangsu University of Science and Technology, ChinaCollege of Power and Energy Engineering, Harbin Engineering University, ChinaCollege of Energy & Power Engineering, Jiangsu University of Science and Technology, ChinaCollege of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, ChinaCollege of Energy & Power Engineering, Jiangsu University of Science and Technology, ChinaCollege of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, ChinaIn 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.https://journals.pan.pl/Content/129620/PDF/BPASTS_2024_72_2_3821.pdfgas turbinefloating-wall combustion chambergas intrusionjet impingement coolingcritic weighting |
| spellingShingle | Hong Shi Rui Wang Mingmin Chen Jiao Wang Jie Yuan Qianwei Zhang Kaijie Yang Optimization sealing and cooling to control gas intrusion in a floating-wall combustion chamber Bulletin of the Polish Academy of Sciences: Technical Sciences gas turbine floating-wall combustion chamber gas intrusion jet impingement cooling critic weighting |
| title | Optimization sealing and cooling to control gas intrusion in a floating-wall combustion chamber |
| title_full | Optimization sealing and cooling to control gas intrusion in a floating-wall combustion chamber |
| title_fullStr | Optimization sealing and cooling to control gas intrusion in a floating-wall combustion chamber |
| title_full_unstemmed | Optimization sealing and cooling to control gas intrusion in a floating-wall combustion chamber |
| title_short | Optimization sealing and cooling to control gas intrusion in a floating-wall combustion chamber |
| title_sort | optimization sealing and cooling to control gas intrusion in a floating wall combustion chamber |
| topic | gas turbine floating-wall combustion chamber gas intrusion jet impingement cooling critic weighting |
| url | https://journals.pan.pl/Content/129620/PDF/BPASTS_2024_72_2_3821.pdf |
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