文献类型：期刊文献

英文题名：Effect of Primary Holes Structure on Flow Characteristic and Combustion Performance of High Temperature Rise Combustor Based on RQL

作者：Chen, Jian Li, Jianzhong Dong, Qingqing Xue, Jiutian Hu, Ge

第一作者：陈娟

通信作者：Chen, J[1]

机构：[1]Guizhou Inst Technol, Sch Aerosp Engn, 1 Caiguan Rd, Guiyang 550003, Peoples R China;[2]Nanjing Univ Aeronaut & Astronaut, Jiangsu Prov Key Lab Aerosp Power Syst, 29 Yudao St, Nanjing 210016, 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, 1 Caiguan Rd, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：0

外文期刊名：INTERNATIONAL JOURNAL OF AERONAUTICAL AND SPACE SCIENCES

收录：;EI(收录号：20225213309031);WOS:【SCI-EXPANDED(收录号:WOS:000902028600001)】；

基金：AcknowledgementsThis work was supported by the National Natural Science Foundation of China (No. 52166006) and the natural science foundation of Guizhou Province (Grant No. ZK [2021]-279).

语种：英文

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

摘要：To meet the qualification of temperature rise and reduce emissions, a high temperature rise combustor which is based on RQL (rich-burn/quick-quench/lean-burn) under different primary holes structure had been used to investigate the flow characteristic and combustion performance. The flow field was measured by PIV (particle imaging velocimetry) under different primary holes structure at normal temperature and pressure, and the combustion and emissions performances were simulated under the same conditions in this paper. The results show that the flow field, the airflow mixing effectiveness in the quench zone airflow, the distribution of temperature, the emission and the combustion efficiency change obviously with the primary holes structure. The maximum central recirculation zone height with staggered structure (Case-II) is about 23% higher than that with symmetrical structure. The central recirculation zone length is reduced by 36% and the velocity gradient in the rich zone is increased when the primary holes structure is symmetrical with three holes (Case-I). The insufficient penetration of primary jets has a negative impact to the efficient mixing of the quench zone airflow. Therefore, the symmetrical structure of primary holes is used, increasing the number of holes while reducing the area of single-hole will have a negative impact on the efficient mixing of the quench zone airflow. In addition, when the primary holes structure is symmetrical with four holes (Case-III), the combustion efficiency was reduced by 0.07% and 0.03%, and the maximum emission index of NO was increased by 14% and 19%, respectively, compared with the Case-I and Case-II. On the contrary, the maximum emission index of CO and soot were reduced in rich zone.