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Simulation performance comparison between high temperature rise triple-swirler combustor with double-swirler combustor

Published online by Cambridge University Press:  11 December 2025

D. Wang Open the ORCID record for D. Wang [Opens in a new window] ,
F. Li Open the ORCID record for F. Li [Opens in a new window] ,
H. Lin  and
Y. Tan
D. Wang
Affiliation:
School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 102206, China
F. Li*
Affiliation:
School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 102206, China
H. Lin
Affiliation:
Shenyang Engine Research Institute, Aero Engine Corporation of China, Shenyang 110015, China
Y. Tan
Affiliation:
Gas Turbine Establishment, Aero Engine Corporation of China, Chengdu 610500, China
*
Corresponding author: F. Li; Email: lifeng01@buaa.edu.cn
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Abstract

To investigate the advantages and disadvantages of two multi-swirl fuel-rich dome configurations, namely the triple-swirler and double-swirler, for a novel high-temperature rise centre-staged combustor, this study employed ANSYS Fluent software. Utilising the Reynolds-averaged Navier-Stokes (RANS) equation as the governing equation, three-dimensional numerical simulations were conducted using the Realisable k-ε turbulence model and non-premixed probability density function (PDF) combustion model to analyse the flow and combustion characteristics of both configurations. A comparative study was then performed to evaluate the performance differences between the two dome configurations under take-off and idle conditions. The results demonstrate that, under both conditions, the fuel-air mixing in the triple-swirler combustor occurs faster and more uniformly. Specifically, during takeoff, the primary zone temperature distribution in the triple-swirler combustor is more uniform, while during idle, the fuel-rich combustion region is more symmetrical. Furthermore, across both conditions, the outlet temperature distribution of the triple-swirler combustor is of superior quality, albeit with equivalent combustion efficiency. Notably, the formation of NOx and soot in the triple-swirler combustor, during takeoff conditions, exceeds that of the double-stage combustor along the flow path, whereas the generation of CO and UHC, during idle conditions, is lower in the former.

Keywords

triple-swirler combustorcentral-staged combustordouble-swirler combustorhigh temperature rise combustormulti-swirl fuel-rich dome

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Type
Research Article
Information
The Aeronautical Journal , First View , pp. 1 - 47
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Copyright
© Beijing University of Aeronautics and Astronautics and the Author(s), 2025. Published by Cambridge University Press on behalf of Royal Aeronautical Society

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