压力对航空煤油RP-3结焦的影响  

Effects of pressure on the coking characteristic of jet fuel RP-3

作　　者：琚印超[1] 徐国强[1] 郭隽[1] 王英杰[1] 

机构地区：[1]北京航空航天大学航空发动机气动热力重点实验室,北京100191

出　　处：《北京航空航天大学学报》2010年第3期257-260,共4页Journal of Beijing University of Aeronautics and Astronautics

基　　金：国家自然科学基金资助项目(GrantNO.50676005/E060303)

摘　　要：实验研究航空煤油RP-3在流动状态下的结焦分布情况,并分析了压力对于氧化结焦的影响.实验中采用恒定热流的方式将流经长2 m的单通道不锈钢管(Ф2.2×0.2,1Cr18N i9Ti)中的航空煤油由127℃加热到427℃,质量流量4 g/s,并利用"称重法"获得RP-3结焦数据.通过改变系统压力3,4,5,6,7MPa,研究了压力对RP-3壁面结焦速率的影响规律.实验结果表明,压力的提高,对管壁的结焦有一定的抑制作用,结焦峰值位置也有沿实验段往下游移动的趋势,不同压力情况下的管壁结焦速率分布曲线的形状大致相当.The influences of pressure on the surface coke deposition of RP-3 were studied by experiments.The flowing RP-3 is heated up to supercritical state in a 2 m long single-pass stainless steel tube（Ф2.2×0.2,1Cr18Ni9Ti） with constant heat flux.The mass flow is 4 g/s.The mount of surface coke deposition was obtained by weighting method.The influences of pressure on RP-3 surface coke deposition rate were investigated by changing the pressure.The result shows that the greater pressure can suppress coke deposition to a certain extent;the location of coking peak value tends to move backwards along the experimental segment;the shapes of surface coke deposition distribution curve under different pressure are the same.

关 键 词：压力 航空煤油 结焦 热氧化 

分 类 号：V312.1[航空宇航科学与技术—航空宇航推进理论与工程]