某型航空发动机燃烧室排气污染物数值模拟  

Numerical Simulation of Pollutant Emissions from an Aeroengine Combustor

作　　者：郭艳龙[1] 张宝诚[1] 乔娟[1] 

机构地区：[1]沈阳航空工业学院飞行器动力与能源工程学院,沈阳110036

出　　处：《航空发动机》2008年第4期38-41,共4页Aeroengine

摘　　要：以"热力"型NOx和"瞬发"型NOx及CO生成机理为基础,采用FLUENT6.3.26软件计算出在最大状态和地面慢车状态下,某型航空发动机环形燃烧室的温度场、速度场和浓度场。通过对计算结果的分析得出:火焰温度和燃料停留时间是影响燃烧室排气污染物排放量的主要因素。通过折衷考虑,可以得出降低燃烧室NOx和CO排放的有效措施,可为设计低污染燃烧室提供一定的数值依据。The temperature, velocity and concentration fields of an aeroengine annular combustor were calculated with the FLUENT6. 3. 26 at the maximum and ground idle conditions based on the NO, emissions of ＂thermal＂ and ＂ prompt＂ models and the CO formation mechanisms. The calculation results show that the flame temperature and fuel residence time are major factors for the pollutant emissions flora the combustor. The effective measure was obtained for reducing NOx and CO emissions by the trade -off, which could provide some numerical foundations for the design of the clean combustor.

关 键 词：航空发动机 环形燃烧室 排气污染物 排放置 数值模拟 

分 类 号：X322[环境科学与工程—环境工程] U467.42[机械工程—车辆工程]