三旋流分级燃烧室出口温度分布特性数值研究

doi:10.3976/j.issn.1002-4026.2025080

Abstract

Abstract: To analyze the impact of the three-stage swirler structure on the temperature distributions at the outlet of a centrally staged combustion chamber, in this study, we developed a combined structure of pilot-stage and main-stage swirlers under different swirl numbers to establish a combustion chamber model with a single-head flame tube and performed numerical simulations to systematically investigate how adjusting the swirl number of each stage affects the combustion chamber outlet temperature distribution. The results show that when the pilot-stage swirler rotates in the opposite direction and both the first and second stages have a swirl number of 0.85, the temperature distribution inside the combustion chamber is more favorable. Moreover, when the swirl number of the main combustion stage swirler is 1.39, the high-temperature combustion zone becomes more uniform, the combustion process is more complete and the overall temperature distribution is good. Under this condition, both the outlet temperature distribution coefficient and the outlet radial temperature distribution coefficient are reduced to their lowest points, indicating that the non-uniformity of the combustion chamber outlet temperature field has been significantly improved and the temperature distribution has reached the optimal uniformity. This parameter combination has good engineering adaptability and contributes to improved combustion efficiency and extended service life of key downstream components such as turbine guide vanes.

Key words: three-stage swirler')">three-stage swirler, centrally staged combustion chamber, temperature field, outlet temperature distribution, numerical simulation

CLC Number:

v231.2

Yu Jianqiao, Jiang Shan, Song Yujia, Wang Chengjun. A numerical study on temperature distributions at outlet of a three-swirl staged combustion chamber[J].Shandong Science, 0, (): 1-.

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/ / Recommend three-stage swirler; centrally staged combustion chamber; temperature field; outlet temperature distribution; numerical simulation”. Please open it by linking:https://www.sdkx.net/EN/abstract/abstract1834.shtml" name="neirong"> three-stage swirler; centrally staged combustion chamber; temperature field; outlet temperature distribution; numerical simulation">

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A numerical study on temperature distributions at outlet of a three-swirl staged combustion chamber

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