含湿量对蒸发式火焰稳定器贫油熄火性能的影响  

Effects of humidity ratio on lean blowout performance of piloted vaporization flameholder

作　　者：冯玉桦 刘玉英[1] 邓远灏 黄义勇 FENG Yuhua;LIU Yuying;DENG Yuanhao;HUANG Yiyong(School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China;Sichuan Gas Turbine Establishment,Aero Engine Corporation of China,Chengdu 610500,China)

机构地区：[1]北京航空航天大学能源与动力工程学院,北京100191 [2]中国航空发动机集团有限公司,四川燃气涡轮研究院,成都610500

出　　处：《航空动力学报》2020年第9期1866-1874,共9页Journal of Aerospace Power

摘　　要：在来流温度为300~483 K、来流马赫数为0.14~0.3和含湿量为0~0.16的条件下,以蒸发式火焰稳定器研究对象,基于冷态流场数值模拟研究以及含湿量对燃烧负荷参数、燃烧反应、燃油雾化等的影响分析,提出了考虑含湿量的Lefebvre贫油熄火油气比修正方法,探讨了含湿量对蒸发式火焰稳定器贫油熄火性能的影响规律。研究结果表明:当含湿量增加时,蒸发式火焰稳定器的燃烧负荷参数增加,贫油熄火油气比显著增大,燃烧负荷参数不能完全表征贫油熄火油气比的变化,含湿量对燃油雾化的影响不容忽略。A modified model of Lefebvre lean blowout fuel/air ratio containing humidity ratio was proposed based on cold flow field numerical simulation and analysis of humidity ratio effect on the combustion load parameters, combustion reaction and fuel atomization of piloted vaporization flameholder, under the conditions of 300-483 K incoming temperature, 0.14-0.3 incoming Mach number and 0-0.16 humidity ratio. The effect of humidity ratio on the lean blowout performance of piloted vaporization flameholder was discussed. It was found that the combustion loading parameters increased with the increase of humidity ratio, and the lean blowout fuel/air ratio increased significantly with the increase of humidity ratio. Therefore, the combustion loading parameter makes it difficult to describe the change of lean blowout fuel/air ratio itself alone, and the effect of humidity ratio on the fuel atomization can not be ignored.

关 键 词：含湿量 蒸发式火焰稳定器 贫油熄火 燃烧负荷参数 预测模型修正 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程]