【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。更多还原

【Abstract】 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 NOx 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 from 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.更多还原