文献类型：期刊文献

中文题名：基于RQL燃烧高温升燃烧室淬熄区混合特性研究

英文题名：Research on Mixing Performance in Quenching Zone of High Temperature Rise Combustor Based on RQL Combustion

作者：董德伟 李建中 陈坚 郎旭东 金武

第一作者：董德伟

机构：[1]中国航发湖南动力机械研究所,株洲412002;[2]南京航空航天大学能源与动力学院,南京210016;[3]贵州理工学院航空航天工程学院,贵阳550003

第一机构：中国航发湖南动力机械研究所,株洲412002

年份：2020

卷号：52

期号：4

起止页码：548-558

中文期刊名：南京航空航天大学学报

外文期刊名：Journal of Nanjing University of Aeronautics & Astronautics

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金(51906106)资助项目。

语种：中文

中文关键词：高温升燃烧室;RQL燃烧技术;淬熄区;混合性能

外文关键词：high temperature rise combustor;RQL combustion technology;quenching zone;mixing performance

摘要：为了将富油/淬熄/贫油(RQL)燃烧技术运用于高温升燃烧室设计,优化淬熄区设计以达到最佳混合性能。本文采用数值模拟的方法,在常温、常压状态下对不同燃烧室压损、射流与主流流量比、淬熄孔及旋流器结构下的淬熄区混合性能进行研究。研究结果表明,淬熄孔存在最佳孔间距使得淬熄区内的混合性能达到最优。淬熄区内的混合性能随着淬熄孔的轴向位置后移而逐渐减弱。淬熄孔射流与头部气流的流量比增大,淬熄区内的混合性能增强,但存在临界值。在相同的流量比状态下,增加淬熄孔孔径有利于淬熄区内混合性能的增强。燃烧室湍流强度的提高有利于促进淬熄区内的快速混合。当淬熄孔位于H/2时,采用交错排列和三孔对称排列,淬熄区具有较好的快速混合效果。采用对称排列时,增加淬熄孔数同时减小单孔面积不利于淬熄区内气流的快速混合。
In order to apply rich/quenching/Lean(RQL)combustion technology to the design of high temperature rise combustor,the design of quenching zone was optimized to achieve the best mixing performance.The numerical simulation method was used to study the mixing performance with different pressure loss,jet to mainstream flow ratio,quenching hole and swirler structure under normal temperature and atmospheric pressure.The results show that the best spacing between the quenched holes makes the mixing performance best in the quenching zone.The mixing performance in the quenching zone decreases with the axial displacement of the quenching hole.The mixing performance in the quenching zone increases with the increase of the flow ratio between the jet and the main flow,but there is a critical value.Increasing the diameter of quenching hole is beneficial to the enhancement of mixing performance in quenching zone under the same flow rate condition.The increase of turbulence intensity could promote the quick mixing of airflow in quenching zone.When the quenching holes are located in H/2,the quenching zone has a good mixing performance by using the staggered arrangement and symmetrical arrangement of three holes.In addition,the increase of the number of quenching holes and the decrease of the area of single hole are not conducive to the quick mixing of the airflow in the quenching zone.