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Ignition and Lean Blowout Characteristics of a reverse-flow combustor for an Ultra-Compact Gas Turbine Engine

Journal of Thermal Science 2024年第5期33卷 1897-1906页

作者： JIN Yi HUANG Yakun YAO Kanghong ZHANG Kai WANG Yunbiao WANG Donghao College of Energy and Power Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China National Key Laboratory of Transient Physics Nanjing University of Science and TechnologyNanjing 210094China Low-carbon Aerospace Power Engineering Research Center of Ministry of Education Nanjing 210016China

The flame stability limit and propagation characteristics of a reverse-flow combustor without any flame-stabilized device were experimentally investigated under room temperature and *** results indicate that it is feasible to stabilize the flame in the recirculation zones constructed by the impact jet flow from the primary holes and dilution *** flame projected area is mainly distributed in the recirculation zone upstream of the primary holes,whose presence and absence mark the ignition and *** the ignition process,the growth rate and value of the flame projected area first increase and then decrease with the inlet velocity increasing from 9.4 m/s to 42.1 m/s.A rapid reduction followed by a slow reduction of ignition and lean blowout equivalence ratios is achieved by the increased inlet *** the non-reacting fluid structure in three sections was measured,and detailed velocity profiles were analyzed to improve the understanding of the flame stabilization *** results are conducive to the design of an ultra-compact combustor.

关键词： ultra-compact combustor gas turbine reverse-flow combustor ignition lean blowout

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The Effect of Different Reaction Mechanisms on Combustion Simulation of a reverse-flow combustor

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Journal of Thermal Science 2020年第3期29卷 793-812页

作者： LU Haitao LIU Fuqiang WANG Yulan FAN Xiongjie LIU Cunxi XU Gang Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Three different reaction mechanisms of kerosene and flamelet models were used to simulate combustion in a reverse-flow *** comparing the effects of different mechanisms on the flow field characteristics,components and temperature distribution of the combustion chamber,the results showed that:Under different reaction mechanisms,there was a strong similarity between flow filed and temperature field,but the penetration depth and temperature distribution of local jets were affected by the *** to the different reaction paths and reaction rates,the distribution of major components had a great degree of similarity,but the concentration of intermediate components varied *** analysis,the 16 species and 17 species reaction mechanisms can simulate the flow field and outlet temperature distribution of the combustor well.

关键词： reaction mechanisms reverse-flow combustor flamelet models combustion simulation

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