文献类型：期刊文献

英文题名：Simulation study on the flow characteristic and combustion performance in a high-temperature rise combustor based on RQL under different length of quench zone

作者：Chen, Jian Dong, Qingqing Xue, Jiutian

第一作者：陈娟

通信作者：Chen, J[1];Chen, J[2]

机构：[1]Guizhou Inst Technol, Sch Aerosp Engn, Doctor Rd, Guiyang 550003, Peoples R China;[2]Guizhou Inst Technol, Key Lab Aeroengine Thermal Management & Intelligen, Doctor Rd, Guiyang 550003, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Aerosp Engn, Doctor Rd, Guiyang 550003, Peoples R China;corresponding author), Guizhou Inst Technol, Key Lab Aeroengine Thermal Management & Intelligen, Doctor Rd, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：2024

卷号：46

期号：7

外文期刊名：JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING

收录：;EI(收录号：20242316196535);Scopus(收录号：2-s2.0-85194702210);WOS:【SCI-EXPANDED(收录号:WOS:001232588100004)】；

基金：This work was supported by the National Natural Science Foundation of China (No. 52166006), the natural science foundation of Guizhou Province (Grant No. ZK[2021]-279) and Scientific Research Project of Higher Education Institutions of Guizhou Province (Qian Jiaoji [2022] No.268).

语种：英文

外文关键词：High temperature rise combustor; RQL; Flow characteristic; Combustion performance; Emissions

摘要：In order to achieve high-temperature rise while also considering emissions, a high-temperature rise combustor based on RQL (rich-burn/quick-quench/lean-burn) was designed. The steady-state RANS equation and standard k-epsilon turbulence model were used to simulate and study the influence of quench zone length on flow characteristics and combustion performances under normal temperature and pressure conditions. The results show that as the length of the quench zone increases, the deflection angle of the primary and dilution jets toward the downstream gradually increases, resulting in the weakening of their backflow degree, and a slight decrease in the height of central recirculation zone. The high-temperature zone moves from the rich zone to the quench zone, and the range of hot spot at outlet expands. Compared to the condition of L/H = 0.38, the combustion efficiency increased by 0.09 and 0.13%, the emission index of soot increased by 16.7 and 41.7%, the emission index of CO decreased by 7.1 and 9.5% and the emission index of NO increased by 48.3 and 55.2% under L/X = 0.48 and L/X = 0.62, respectively.