低功率状态下煤液化油的雾化特性  

Atomization characteristics of coal liquefied oil at low power levels

作　　者：李辉[1,2] 龚景松[1] 朴英[1] 陆奇志[1] 曹文杰 王树雷 

机构地区：[1]清华大学航天航空学院,北京100084 [2]北京航空油料技术开发中心,北京100076

出　　处：《清华大学学报（自然科学版）》2014年第10期1310-1315,1320,共7页Journal of Tsinghua University(Science and Technology)

基　　金：清华大学实验室开放基金资助项目(LF20125028)

摘　　要：利用某航空发动机离心式雾化喷嘴,对煤液化油在冷态下的雾化效果进行了实验研究,并与石油基3号喷气燃料(RP3)的雾化效果进行了对比。实验结果表明:煤液化油雾化粒子的直径随燃油压力的增大而减小,当压力增加到1.3MPa后,再增加燃油压力,对粒子直径影响不大。小粒径粒子主要集中在雾锥中心区域,在雾锥边缘处粒子直径较大。与RP3喷气燃料对比结果表明,相同条件下煤液化油的雾化粒子Sauter平均直径高于RP3喷气燃料。The atomization of coal liquefied oil in a pressure-swirl atomizer was investigated in this research.The results show that the droplet size of the coal liquefied oil decreases with increasing fuel injection pressure up to around 1.3 MPa,above which further increases in fuel injection pressure produce little effect on the droplet size.A high concentration of smaller droplets appears in the middle surrounded by a cloud of larger droplets on the periphery.The Sauter mean diameter of the coal liquefied oil is bigger than that of the petroleum based jet fuel（RP3） at the same fuel injection pressure.

关 键 词：煤液化油 离心式喷嘴 Sauter平均直径 

分 类 号：TK16[动力工程及工程热物理—热能工程]