摘要
以全环回流燃烧室验件为平台,试验研究了吞水量对燃烧室进口温度、燃烧效率、燃烧室当量温升、燃烧室出口温度分布系数(OTDF)、燃烧室出口径向温度分布系数(RTDF)等燃烧室性能的影响。试验结果表明:发动机不同的工作状态,在吞水量为燃烧室进口空气流量5%的范围内,随着燃烧室吞水量的增加,燃烧室进口温度、燃烧效率、总压损失和当量温升均会降低,地面慢车燃烧效率从99.3%下降到97.2%;燃烧出口温度场品质变差,设计点状态的燃烧室出口温度分布系数值由0.23升高到0.28;地面慢车燃烧室熄火油气比由0.004 5升高到0.006 5,熄火边界缩小。
The test of a certain annular reverse-flow combustor performance change after swallowing water was carried out,the combustor performance was measured,including the inlet temperature,combustion efficiency,equivalent temperature rise,overall temperature distribution factor(OTDF)and radial temperature distribution factor(RTDF),etc.The results showed that:when the mass of swallowing water ranged from zero to 5%,with the increase of the mass of swallowing water in all flight states,the inlet temperature and total pressure loss decreased,equivalent temperature rise decreased and ground idle combustion efficiency decreased from99.3% to 97.2%.overall temperature distribution factor and radial temperature distribution factor increased,of which overall temperature distribution factor increased from 0.23 to 0.28 in design state.The lean blowout fuel and air ratio of ground idle state increased from 0.004 5 to0.006 5 and the lean blowout boundary became narrower.
作者
郎旭东
李维
戴金鑫
杨大伟
邬俊
陈剑
LANG Xudong;LI Wei;DAI Jinxin;YANG Dawei;WU Jun;CHEN Jian(Hunan Aviation Powerplant Research Institute,Aero Engine Corporation of China,Zhuzhou Hunan 412002,China)
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2022年第7期1345-1351,共7页
Journal of Aerospace Power
关键词
回流燃烧室
地面慢车
吞水量
燃烧室性能
贫油熄火
油气比(FAR)
reverse-flow combustor
ground idle
mass of swallowing water
combustor performance
lean blowout
fuel air ratio(FAR)
